ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME

Abstract

An organic light emitting diode and an organic light emitting device including the same are discussed. The organic light emitting diode can include a first compound represented by a following formula, a second compound as a p-type host, and a third compound as an n-type host in an emitting material layer. As a result, the organic light emitting diode and the organic light emitting device have advantages in the driving voltage, the luminous efficiency and the lifespan.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Korean Patent Application No. 10-2021-0133080, filed in the Republic of Korea on Oct. 7, 2021, which is expressly incorporated by reference into the present application.

BACKGROUND

Technical Field

The present disclosure relates to an organic light emitting diode, and more specifically, to an organic light emitting diode having excellent luminous efficiency and luminous lifespan and an organic light emitting device including the organic light emitting diode.

Discussion of the Related Art

An organic light emitting diode (OLED) display among a flat display device used widely has come into the spotlight as a display device replacing rapidly a liquid crystal display device (LCD). The OLED can be formed as a thin organic film with a thickness less than 2000 Å and can implement unidirectional or bidirectional images by electrode configurations. Also, the OLED can be formed even on a flexible transparent substrate such as a plastic substrate so that a flexible or a foldable display device can be realized with ease using the OLED. In addition, the OLED can be driven at a lower voltage and the OLED has excellent high color purity compared to the LCD.

The OLED includes an anode, a cathode and an emitting material layer, and the emitting material layer includes a host and a dopant (e.g., an emitter).

Since fluorescent material as the dopant uses only singlet exciton energy in the luminous process, the related art fluorescent material shows low luminous efficiency. On the contrary, phosphorescent material can show high luminous efficiency since it uses triplet exciton energy as well as singlet exciton energy in the luminous process. However, metal complex, representative phosphorescent material, has short luminous lifespan for commercial use.

In addition, the luminous efficiency and the luminous lifespan of the OLED are affected by the exciton generation efficiency in the host and the energy transfer efficiency from the host to the dopant.

Accordingly, development of materials of the emitting material layer being capable of improving the luminous efficiency and the luminous lifespan of the OLED is required.

SUMMARY OF THE DISCLOSURE

Accordingly, embodiments of the present disclosure are directed to an OLED and an organic light emitting device that substantially obviate one or more of the problems associated with the limitations and disadvantages of the related art.

An aspect of the present disclosure is to provide an OLED and an organic light emitting device having excellent luminous efficiency and luminous lifespan.

Additional features and aspects will be set forth in the description that follows, and in part will be apparent from the description, or can be learned by practice of the inventive concepts provided herein. Other features and aspects of the inventive concept can be realized and attained by the structure particularly pointed out in the written description, or derivable therefrom, and the claims hereof as well as the appended drawings.

To achieve these and other aspects of the inventive concepts, as embodied and broadly described, in one aspect, the present disclosure provides an organic light emitting diode comprising: a first electrode; a second electrode facing the first electrode; and a first emitting part including a first red emitting material layer and positioned between the first and second electrodes, wherein the first red emitting material layer includes a first compound, a second compound and a third compound, wherein the first compound is represented by Formula 1-1:

wherein M is molybdenum (Mo), tungsten (W), rhenium (Re), ruthenium (Ru), osmium (Os), rhodium (Rh), iridium (Ir), palladium (Pd), platinum (Pt) or silver (Ag); each of A and B is a carbon atom; R is an unsubstituted or substituted C₁-C₂₀ alkyl group, an unsubstituted or substituted C₁-C₂₀ alkyl silyl group, an unsubstituted or substituted C₃-C₃₀ alicyclic group, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic group, an unsubstituted or substituted C₆-C₃₀ aromatic group or an unsubstituted or substituted C₃-C₃₀ hetero aromatic group; each of X¹ to X¹¹ is independently a carbon atom, CR¹ or N; only one of: a ring (a) with X³-X⁵, Y¹ and A; or a ring (b) with X⁸-X¹¹, Y² and B is formed; and if the ring (a) is formed, each of X³ and Y¹ is a carbon atom, X⁶ and X⁷ or X⁷ and X⁸ forms an unsubstituted or substituted C₃-C₃₀ alicyclic ring, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic ring, an unsubstituted or substituted C₆-C₃₀ aromatic ring or an unsubstituted or substituted C₃-C₃₀ hetero aromatic ring; and Y² is BR², CR²R³, C═O, SiR²R³, GeR²R³, PR², P═O, O, S, SO₂, Se, SeO₂, Te, TeO₂, or NR^a, wherein R^a is an unsubstituted or substituted C₁-C₂₀ alkyl group or an unsubstituted or substituted C₆-C₃₀ aromatic group; if the ring (b) is forms, each of X⁸ and Y² is a carbon atom, X¹ and X² or X² and X³ forms an unsubstituted or substituted C₃-C₃₀ alicyclic ring, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic ring, an unsubstituted or substituted C₆-C₃₀ aromatic ring or an unsubstituted or substituted C₃-C₃₀ hetero aromatic ring; and Y¹ is BR², CR²R³, C═O, SiR²R³, GeR²R³, PR², P═O, O, S, SO₂, Se, SeO₂, Te, TeO₂, or NR^a, wherein R^a is an unsubstituted or substituted C₁-C₂₀ alkyl group or an unsubstituted or substituted C₆-C₃₀ aromatic group, each of R¹ to R³ is independently hydrogen, protium, deuterium, tritium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrozone group, an unsubstituted or substituted C₁-C₂₀ alkyl group, an unsubstituted or substituted C₂-C₂₀ alkenyl group, an unsubstituted or substituted C₂-C₂₀ alkynyl group, an unsubstituted or substituted C₁-C₂₀ alkoxy group, an amino group, an unsubstituted or substituted C₁-C₂₀ alkyl amino group, an unsubstituted or substituted C₁-C₂₀ alkyl silyl group, a carboxyl group, a nitrile group, an isonitrile group, a sulfanyl group, a phosphino group, an unsubstituted or substituted C₃-C₃₀ alicyclic group, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic group, an unsubstituted or substituted C₆-C₃₀ aromatic group or an unsubstituted or substituted C₃-C₃₀ hetero aromatic group, optionally, two adjacent R¹, and/or R² and R³ form an unsubstituted or substituted C₃-C₃₀ alicyclic ring, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic ring, an unsubstituted or substituted C₆-C₃₀ aromatic ring or an unsubstituted or substituted C₃-C₃₀ hetero aromatic ring;

is an auxiliary ligand; m is an integer of 1 to 3; n is an integer of 0 to 2; and m+n is an oxidation number of M, wherein the second compound is represented by Formula 2-1:

, wherein each of X and Y is independently selected from the group consisting of an unsubstituted or substituted C₆-C₃₀ aryl group and an unsubstituted or substituted C₃-C₃₀ heteroaryl group, R⁴ is selected from the group consisting of an unsubstituted or substituted C₁-C₂₀ alkyl group and an unsubstituted or substituted C₆-C₃₀ aryl group, a1 is an integer of 0 to 9, L¹ is selected from the group consisting of an unsubstituted or substituted C₆-C₃₀ arylene group and an unsubstituted or substituted C₃-C₃₀ heteroarylene group, and a2 is 0 or 1, wherein the third compound is represented by Formula 3-1:

, wherein X is NR⁸, O or S, R⁸ is selected from the group consisting of an unsubstituted or substituted C₁-C₁₀ alkyl group, an unsubstituted or substituted C₆-C₃₀ aryl group and an unsubstituted or substituted C₃-C₃₀ heteroaryl group, R⁷ is selected from the group consisting of an unsubstituted or substituted C₆-C₃₀ aryl group and an unsubstituted or substituted C₃-C₃₀ heteroaryl group, L² is selected from the group consisting of an unsubstituted or substituted C₆-C₃₀ arylene group and an unsubstituted or substituted C₃-C₃₀ heteroarylene group, and b is 0 or 1.

In another aspect, the present disclosure provides an organic light emitting device comprising a substrate; and the above organic light emitting diode positioned on or over the substrate.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the inventive concepts as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the disclosure, are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and together with the description serve to explain principles of the disclosure.

FIG. 1 is a schematic circuit diagram illustrating an organic light emitting display device according to an embodiment of the present disclosure.

FIG. 2 is a cross-sectional view illustrating an organic light emitting display device according to a first embodiment of the present disclosure.

FIG. 3 is a cross-sectional view illustrating an OLED according to a second embodiment of the present disclosure.

FIG. 4 is a cross-sectional view illustrating an OLED according to a third embodiment of the present disclosure.

FIG. 5 is a cross-sectional view illustrating an organic light emitting display device according to a fourth embodiment of the present disclosure.

FIG. 6 is a cross-sectional view illustrating an OLED according to a fifth embodiment of the present disclosure.

FIG. 7 is a cross-sectional view illustrating an OLED according to a sixth embodiment of the present disclosure.

FIG. 8 is a cross-sectional view illustrating an OLED according to a seventh embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Reference will now be made in detail to aspects of the disclosure, examples of which are illustrated in the accompanying drawings.

In the present disclosure, a dopant (e.g., an emitter), an n-type host and a p-type host each having excellent optical property are included in an emitting material layer (EML) of an OLED so that the OLED has advantages in at least one of a driving voltage, a luminous efficiency and a luminous lifespan. For example, the organic light emitting device can be an organic light emitting display device or an organic light emitting lighting device. The explanation below is focused on the organic light emitting display device including the OLED. All the components of each OLED and each organic light emitting display device according to all embodiments of the present disclosure are operatively coupled and configured.

FIG. 1 is a schematic circuit diagram illustrating an organic light emitting display device according to the present disclosure.

As shown in FIG. 1, an organic light emitting display device includes a gate line GL, a data line DL, a power line PL, a switching thin film transistor TFT Ts, a driving TFT Td, a storage capacitor Cst, and an OLED D. The gate line GL and the data line DL cross each other to define a pixel region P. The pixel region can include a red pixel region, a green pixel region and a blue pixel region.

The switching TFT Ts is connected to the gate line GL and the data line DL, and the driving TFT Td and the storage capacitor Cst are connected to the switching TFT Ts and the power line PL. The OLED D is connected to the driving TFT Td.

In the organic light emitting display device, when the switching TFT Ts is turned on by a gate signal applied through the gate line GL, a data signal from the data line DL is applied to the gate electrode of the driving TFT Td and an electrode of the storage capacitor Cst.

When the driving TFT Td is turned on by the data signal, an electric current is supplied to the OLED D from the power line PL. As a result, the OLED D emits light. In this case, when the driving TFT Td is turned on, a level of an electric current applied from the power line PL to the OLED D is determined such that the OLED D can produce a gray scale.

The storage capacitor Cst serves to maintain the voltage of the gate electrode of the driving TFT Td when the switching TFT Ts is turned off. Accordingly, even if the switching TFT Ts is turned off, a level of an electric current applied from the power line PL to the OLED D is maintained to next frame.

As a result, the organic light emitting display device displays a desired image.

FIG. 2 is a schematic cross-sectional view of an organic light emitting display device according to a first embodiment of the present disclosure.

As shown in FIG. 2, the organic light emitting display device 100 includes a substrate 110, a TFT Tr on or over the substrate 110, a planarization layer 150 covering the TFT Tr and an OLED D on the planarization layer 150 and connected to the TFT Tr.

The substrate 110 can be a glass substrate or a flexible substrate. For example, the flexible substrate can be one of a polyimide (PI) substrate, a polyethersulfone (PES) substrate, a polyethylenenaphthalate (PEN) substrate, a polyethylene terephthalate (PET) substrate and a polycarbonate (PC) substrate.

A buffer layer 122 is formed on the substrate, and the TFT Tr is formed on the buffer layer 122. The buffer layer 122 can be omitted. For example, the buffer layer 122 can be formed of an inorganic insulating material, e.g., silicon oxide or silicon nitride.

A semiconductor layer 120 is formed on the buffer layer 122. The semiconductor layer 120 can include an oxide semiconductor material or polycrystalline silicon.

When the semiconductor layer 120 includes the oxide semiconductor material, a light-shielding pattern can be formed under the semiconductor layer 120. The light to the semiconductor layer 120 is shielded or blocked by the light-shielding pattern such that thermal degradation of the semiconductor layer 120 can be prevented. On the other hand, when the semiconductor layer 120 includes polycrystalline silicon, impurities can be doped into both sides of the semiconductor layer 120.

A gate insulating layer 124 of an insulating material is formed on the semiconductor layer 120. The gate insulating layer 124 can be formed of an inorganic insulating material such as silicon oxide or silicon nitride.

A gate electrode 130, which is formed of a conductive material, e.g., metal, is formed on the gate insulating layer 124 to correspond to a center of the semiconductor layer 120. In FIG. 2, the gate insulating layer 124 is formed on an entire surface of the substrate 110. Alternatively, the gate insulating layer 124 can be patterned to have the same shape as the gate electrode 130.

An interlayer insulating layer 132 of an insulating material is formed on the gate electrode 130 and over an entire surface of the substrate 110. The interlayer insulating layer 132 can be formed of an inorganic insulating material, e.g., silicon oxide or silicon nitride, or an organic insulating material, e.g., benzocyclobutene or photo-acryl.

The interlayer insulating layer 132 includes first and second contact holes 134 and 136 exposing both sides of the semiconductor layer 120. The first and second contact holes 134 and 136 are positioned at both sides of the gate electrode 130 to be spaced apart from the gate electrode 130.

The first and second contact holes 134 and 136 are formed through the gate insulating layer 124. Alternatively, when the gate insulating layer 124 is patterned to have the same shape as the gate electrode 130, the first and second contact holes 134 and 136 is formed only through the interlayer insulating layer 132.

A source electrode 144 and a drain electrode 146, which are formed of a conductive material, e.g., metal, are formed on the interlayer insulating layer 132.

The source electrode 144 and the drain electrode 146 are spaced apart from each other with respect to the gate electrode 130 and respectively contact both sides of the semiconductor layer 120 through the first and second contact holes 134 and 136.

The semiconductor layer 120, the gate electrode 130, the source electrode 144 and the drain electrode 146 constitute the TFT Tr. The TFT Tr serves as a driving element. Namely, the TFT Tr is the driving TFT Td (of FIG. 1).

In the TFT Tr, the gate electrode 130, the source electrode 144, and the drain electrode 146 are positioned over the semiconductor layer 120. Namely, the TFT Tr has a coplanar structure.

Alternatively, in the TFT Tr, the gate electrode can be positioned under the semiconductor layer, and the source and drain electrodes can be positioned over the semiconductor layer such that the TFT Tr can have an inverted staggered structure. In this instance, the semiconductor layer can include amorphous silicon.

The gate line and the data line cross each other to define the pixel region, and the switching TFT is formed to be connected to the gate and data lines. The switching TFT is connected to the TFT Tr as the driving element. In addition, the power line, which can be formed to be parallel to and spaced apart from one of the gate and data lines, and the storage capacitor for maintaining the voltage of the gate electrode of the TFT Tr in one frame can be further formed.

A planarization layer 150 is formed on an entire surface of the substrate 110 to cover the source and drain electrodes 144 and 146. The planarization layer 150 provides a flat top surface and has a drain contact hole 152 exposing the drain electrode 146 of the TFT Tr.

The OLED D is disposed on the planarization layer 150 and includes a first electrode 160, which is connected to the drain electrode 146 of the TFT Tr through the drain contact hole 152, an organic light emitting layer 162 and a second electrode 164. The organic light emitting layer 162 and the second electrode 164 are sequentially stacked on the first electrode 160. For example, a red pixel region, a green pixel region and a blue pixel region can be defined on the substrate 110, and the OLED D is positioned in each of the red, green and blue pixel regions. Namely, the OLEDs respectively emitting the red, green and blue light are respectively positioned in each of the red, green and blue pixel regions.

A first electrode 160 is separately formed in each pixel and on the planarization layer 150. The first electrode 160 can be an anode and can be formed of a conductive material, e.g., a transparent conductive oxide (TCO), having a relatively high work function. For example, the first electrode 160 can be formed of indium-tin-oxide (ITO), indium-zinc-oxide (IZO), indium-tin-zinc-oxide (ITZO), tin oxide (SnO), zinc oxide (ZnO), indium-copper-oxide (ICO) or aluminum-zinc-oxide (Al:ZnO, AZO).

When the organic light emitting display device 100 is operated in a bottom-emission type, the first electrode 160 can have a single-layered structure of the transparent conductive material layer. When the organic light emitting display device 100 is operated in a top-emission type, the first electrode 160 can further include a reflection electrode or a reflection layer. For example, the reflection electrode or the reflection layer can be formed of silver (Ag) or aluminum-palladium-copper (APC) alloy. In the top-emission type organic light emitting display device 100, the first electrode 160 can have a triple-layered structure of ITO/Ag/ITO or ITO/APC/ITO.

A bank layer 166 is formed on the planarization layer 150 to cover an edge of the first electrode 160. Namely, the bank layer 166 is positioned at a boundary of the pixel and exposes a center of the first electrode 160 in the pixel.

The organic emitting layer 162 is formed on the first electrode 160. The organic emitting layer 162 can have a single-layered structure of an emitting material layer. Alternatively, the organic emitting layer 162 can further include at least one of a hole injection layer (HIL), a hole transporting layer (HTL), an electron blocking layer (EBL), a hole blocking layer (HBL), an electron transporting layer (ETL) and an electron injection layer (EIL) to have a multi-layered structure. In addition, the organic emitting layer 162 can include at least two EMLs, which is spaced apart from each other, to have a tandem structure.

As illustrated below, in the OLED D in the red pixel region, the EML in the organic emitting layer 162 includes a first compound being a red dopant (emitter), a second compound being a p-type host and a third compound being an n-type host. As a result, in the OLED D, the driving voltage is decreased, and the luminous efficiency and the luminous lifespan are increased.

The second electrode 164 is formed over the substrate 110 where the organic emitting layer 162 is formed. The second electrode 164 covers an entire surface of the display area and can be formed of a conductive material having a relatively low work function to serve as a cathode. For example, the second electrode 164 can be formed of aluminum (Al), magnesium (Mg), calcium (Ca), silver (Ag) or their alloy or combination. In the top-emission type organic light emitting display device 100, the second electrode 164 can have a thin profile (small thickness) to provide a light transmittance property (or a semi-transmittance property).

The organic light emitting display device 100 can further include a color filter corresponding to the red, green and blue pixel regions. For example, red, green and blue color filter patterns can be formed in the red, green and blue pixel regions, respectively, so that the color purity of the organic light emitting display device 100 can be improved. In the bottom-type organic light emitting display device 100, the color filter can be disposed between the OLED D and the substrate 110, e.g., between the interlayer insulating layer 132 and the planarization layer 150. Alternatively, in the top-emission type organic light emitting display device 100, the color filter can be disposed on or over the OLED D, e.g., on or over the second electrode 164.

An encapsulation film 170 is formed on the second electrode 164 to prevent penetration of moisture into the OLED D. The encapsulation film 170 includes a first inorganic insulating layer 172, an organic insulating layer 174 and a second inorganic insulating layer 176 sequentially stacked, but it is not limited thereto. The encapsulation film 170 can be omitted.

The organic light emitting display device 100 can further include a polarization plate for reducing an ambient light reflection. For example, the polarization plate can be a circular polarization plate. In the bottom-emission type organic light emitting display device 100, the polarization plate can be disposed under the substrate 110. In the top-emission type organic light emitting display device 100, the polarization plate can be disposed on or over the encapsulation film 170.

In addition, in the top-emission type organic light emitting display device 100, a cover window can be attached to the encapsulation film 170 or the polarization plate. In this instance, the substrate 110 and the cover window have a flexible property such that a flexible organic light emitting display device can be provided.

FIG. 3 is a cross-sectional view illustrating an OLED according to a second embodiment of the present disclosure.

As shown in FIG. 3, the OLED D1 includes the first and second electrodes 160 and 164 facing each other and the organic emitting layer 162 therebetween. The organic emitting layer 162 includes a red EML 230.

The organic light emitting display device 100 (of FIG. 2) includes the red, green and blue pixel regions, and the OLED D1 can be positioned in the red pixel region.

The first electrode 160 is an anode for injecting the hole, and the second electrode 164 is a cathode for injecting the electron. One of the first and second electrodes 160 and 164 is a reflective electrode, and the other one of the first and second electrodes 160 and 164 is a transparent (semitransparent) electrode.

For example, the first electrode 160 can include a transparent conductive material, e.g., ITO or IZO, and the second electrode 164 can include one of Al, Mg, Ag, AlMg and MgAg.

The organic emitting layer 162 can further include at least one of the HTL 220 under the red EML 230 and the ETL 240 on or over the red EML 230. Namely, the HTL 220 is disposed between the red EML 230 and the first electrode 160, and the ETL 240 is disposed between the red EML 230 and the second electrode 164.

In addition, the organic emitting layer 162 can further include at least one of the HIL 210 under the HTL 220 and the EIL 250 on the ETL 240.

The organic emitting layer 162 can further include at least one of the EBL between the HTL 220 and the red EML 230 and the HBL between the ETL 240 and the red EML 230.

In the OLED D1 of the present disclosure, the red EML 230 can constitute an emitting part, or the red EML 230 and at least one of the HIL 210, the HTL 220, the EBL, the HBL, the ETL 240 and the EIL 250 can constitute the emitting part.

The red EML 230 includes a first compound 232 being the red dopant, a second compound 234 being the p-type host, e.g., a first host, and a third compound 236 being the n-type host, e.g., a second host. The red EML can have a thickness of 100 to 400 Å, e.g., 200 to 400 Å.

In the red EML 230, each of the second and third compounds 234 and 236 can have a weight % being greater than the first compound 232. For example, in the red EML 230, the first compound 232 can have a weight % of 1 to 20, e.g., 5 to 15.

In addition, in the red EML 230, a ratio of the weight % between the second compound 234 and the third compound 236 can be 1:3 to 3:1. For example, in the red EML 230, the second and third compounds 234 and 236 can have the same weight %.

The first compound 232 is represented by Formula 1-1. The first compound 232 is an organometallic compound and has a rigid chemical conformation so that it can enhance luminous efficiency and luminous lifespan of the OLED D1.

wherein

• M is molybdenum (Mo), tungsten (W), rhenium (Re), ruthenium (Ru), osmium (Os), rhodium (Rh), iridium (Ir), palladium (Pd), platinum (Pt) or silver (Ag);
• each of A and B is a carbon atom;
• R is an unsubstituted or substituted C₁-C₂₀ alkyl group, an unsubstituted or substituted C₁-C₂₀ alkyl silyl group, an unsubstituted or substituted C₃-C₃₀ alicyclic group, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic group, an unsubstituted or substituted C₆-C₃₀ aromatic group or an unsubstituted or substituted C₃-C₃₀ hetero aromatic group;
• each of X¹ to X¹¹ is independently a carbon atom, CR¹ or N;
• only one of: a ring (a) with X³-X⁵, Y¹ and A; or a ring (b) with X⁸-X¹¹, Y² and B, is formed; and
• if the ring (a) is formed,
  • each of X³ and Y¹ is a carbon atom,
  • X⁶ and X⁷ or X⁷ and X⁸ forms an unsubstituted or substituted C₃-C₃₀ alicyclic ring, the unsubstituted or substituted C₃-C₃₀ hetero alicyclic ring, an unsubstituted or substituted C₆-C₃₀ aromatic ring or an unsubstituted or substituted C₃-C₃₀ hetero aromatic ring; and
  • Y² is BR², CR²R³, C═O, SiR²R³, GeR²R³, PR², P═O, O, S, SO₂, Se, SeO₂, Te, TeO₂, or NR^a, wherein R^a is an unsubstituted or substituted C₁-C₂₀ alkyl group or an unsubstituted or substituted C₆-C₃₀ aromatic group;
• if the ring (b) is forms,
  • each of X⁸ and Y² is a carbon atom,
  • X¹ and X² or X² and X³ forms an unsubstituted or substituted C₃-C₃₀ alicyclic ring, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic ring, an unsubstituted or substituted C₆-C₃₀ aromatic ring or an unsubstituted or substituted C₃-C₃₀ hetero aromatic ring; and
  • Y¹ is BR², CR²R³, C═O, SiR²R³, GeR²R³, PR², P═O, O, S, SO₂, Se, SeO₂, Te, TeO₂, or NR^a, wherein R^a is an unsubstituted or substituted C₁-C₂₀ alkyl group or an unsubstituted or substituted C₆-C₃₀ aromatic group,
• each of R¹ to R³ is independently hydrogen, protium, deuterium, tritium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrozone group, an unsubstituted or substituted C₁-C₂₀ alkyl group, an unsubstituted or substituted C₂-C₂₀ alkenyl group, an unsubstituted or substituted C₂-C₂₀ alkynyl group, an unsubstituted or substituted C₁-C₂₀ alkoxy group, an amino group, an unsubstituted or substituted C₁-C₂₀ alkyl amino group, an unsubstituted or substituted C₁-C₂₀ alkyl silyl group, a carboxyl group, a nitrile group, an isonitrile group, a sulfanyl group, a phosphino group, an unsubstituted or substituted C₃-C₃₀ alicyclic group, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic group, an unsubstituted or substituted C₆-C₃₀ aromatic group or an unsubstituted or substituted C₃-C₃₀ hetero aromatic group,
• optionally,
• two adjacent R¹, and/or R² and R³ form an unsubstituted or substituted C₃-C₃₀ alicyclic ring, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic ring, an unsubstituted or substituted C₆-C₃₀ aromatic ring or an unsubstituted or substituted C₃-C₃₀ hetero aromatic ring;
• is an auxiliary ligand;
• m is an integer of 1 to 3; and
• n is an integer of 0 to 2; and
• m+n is an oxidation number of M.

As used herein, the term “unsubstituted” means that the specified group bears no substituents, and hydrogen is linked. In this case, hydrogen comprises protium, deuterium and tritium without specific disclosure.

As used herein, substituent in the term “substituted” comprises, but is not limited to, unsubstituted or halogen-substituted C1-C20 alkyl, unsubstituted or halogen-substituted C1-C20 alkoxy, halogen, cyano, -CF3, a hydroxyl group, a carboxylic group, a carbonyl group, an amino group, a C1-C10 alkyl amino group, a C6-C30 aryl amino group, a C3-C30 hetero aryl amino group, a C6-C30 aryl group, a C3-C30 hetero aryl group, a nitro group, a hydrazyl group, a sulfonate group, a C1-C20 alkyl silyl group, a C1-C20 alkoxy silyl group, a C3-C20 cycloalkyl silyl group, a C6-C30 aryl silyl group and a C3-C30 hetero aryl silyl group.

As used herein, the term “alkyl” refers to a branched or unbranched saturated hydrocarbon group of 1 to 20 carbon atoms, such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl, n-pentyl, isopentyl, s-pentyl, neopentyl, hexyl, heptyl, octyl, nonyl, decyl, dodecyl, tetradecyl, hexadecyl, and the like.

As used herein, the term “alkenyl” is a hydrocarbon group of 2 to 20 carbon atoms containing at least one carbon-carbon double bond. The alkenyl group can be substituted with one or more substituents.

As used herein, the term “alicyclic” or “cycloalkyl” refers to non-aromatic carbon-containing ring composed of at least three carbon atoms. Examples of alicyclic groups include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, norbornyl, and the like. The alicyclic group can be substituted with one or more substituents.

As used herein, the term “alkoxy” refers to a branched or unbranched alkyl bonded through an ether linkage represented by the formula -O(-alkyl) where alkyl is defined herein. Examples of alkoxy include methoxy, ethoxy, n-propoxy, isopropoxy, butoxy, and tert-butoxy, and the like.

As used herein, the term “alkyl amino” refers to a group represented by the formula -NH(-alkyl) or -N(-alkyl)₂ where alkyl is defined herein. Examples of alkyl amino represented by the formula -NH(-alkyl) include, but not limited to, methylamino group, ethylamino group, propylamino group, isopropylamino group, butylamino group, isobutylamino group, (sec-butyl)amino group, (tert-butyl)amino group, pentylamino group, isopentylamino group, (tert-pentyl)amino group, hexylamino group, and the like. Examples of alkyl amino represented by the formula -N(-alkyl)₂ include, but not limited to, dimethylamino group, diethylamino group, dipropylamino group, diisopropylamino group, dibutylamino group, diisobutylamino group, di(sec-butyl)amino group, di(tert-butyl)amino group, dipentylamino group, diisopentylamino group, di(tert-pentyl)amino group, dihexylamino group, N-ethyl-N-methylamino group, N-methyl-N-propylamino group, N ethyl-N-propylamino group and the like.

As used herein, the term “aromatic” or “aryl” is well known in the art. The term includes monocyclic rings linked covalently or fused-ring polycyclic groups. An aromatic group can be unsubstituted or substituted. Examples of aromatic or aryl include phenyl, 1-naphthyl, 2-naphthyl, 4-biphenyl, anthracenyl, and phenanthracenyl and the like. Substituents for each of the above noted aryl ring systems are acceptable substituents are defined herein.

As used herein, the term “alkyl silyl group” refers to any linear or branched, saturated or unsaturated acyclic or acyclic alkyl, and the alkyl has 1 to 20 carbon atoms. Examples of the alkyl silyl group include a trimethylsilyl group, a trimethylsilyl group, a t-butyldimethylsilyl group, a vinyldimethylsilyl group, a propyldimethylsilyl group, a triphenylsilyl group, a diphenylsilyl group, and a phenylsilyl group.

As used herein, the term “halogen” refers to fluorine, chlorine, bromine or iodine atom.

As used herein, the term “hetero” in such as “a hetero aromatic ring”, “a hetero cycloalkylene group”, “a hetero arylene group”, “a hetero aryl alkylene group”, “a hetero aryl oxylene group”, “a hetero cycloalkyl group”, “a hetero aryl group”, “a hetero aryl alkyl group”, “a hetero aryloxyl group”, “a hetero aryl amino group” and “a hetero aryl silyl group” means that at least one carbon atom, for example 1-5 carbons atoms, constituting an aromatic ring or an alicyclic ring is substituted with at least one hetero atom selected from the group consisting of N, O, S, Si, Se, P, B and combination thereof.

As used herein, the term “hetero aromatic” or “hetero aryl” refers to a heterocycle including hetero atoms selected from N, O and S in a ring where the ring system is an aromatic ring. The term includes monocyclic rings linked covalently or fused-ring polycyclic groups. A hetero aromatic group can be unsubstituted or substituted. Examples of hetero aromatic or hetero aryl include pyridyl, pyrrolyl, pyrazinyl, pyrimidinyl, thienyl (alternatively referred to as thiophenyl), thiazolyl, furanyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, oxadiazolyl, thiazolyl, and thiadiazolyl.

As used herein, the term “hetero aryl oxy” refers to a group represented by the formula —O— (hetero aryl) where hetero aryl is defined herein.

For example, when each of R and R¹ to R³ in Formula 1-1 is independently a C₆-C₃₀ aromatic group, each of R and R¹ to R³ can be independently selected from the group consisting of, but is not limited to, a C₆-C₃₀ aryl group, a C₇-C₃₀ aryl alkyl group, a C₆-C₃₀ aryl oxy group and a C₆-C₃₀ aryl amino group. As an example, when each of R and R¹ to R³ is independently a C₆-C₃₀ aryl group, each of R and R¹ to R³ can be independently selected from the group consisting of, but is not limited to, an unfused or fused aryl group such as phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, pentalenyl, indenyl, indeno-indenyl, heptalenyl, biphenylenyl, indacenyl, phenalenyl, phenanthrenyl, benzo-phenanthrenyl, dibenzo-phenanthrenyl, azulenyl, pyrenyl, fluoranthenyl, triphenylenyl, chrysenyl, tetraphenylenyl, tetracenyl, pleiadenyl, picenyl, pentaphenylenyl, pentacenyl, fluorenyl, indeno-fluorenyl and spiro-fluorenyl.

Alternatively, when each of R and R¹ to R³ in Formula 1 is independently a C₃-C₃₀ hetero aromatic group, each of R and R¹ to R³ can be independently selected from the group consisting of, but is not limited to, a C₃-C₃₀ hetero aryl group, a C₄-C₃₀ hetero aryl alkyl group, a C₃-C₃₀ hetero aryl oxy group and a C₃-C₃₀ hetero aryl amino group. As an example, when each of R and R¹ to R³ is independently a C₃-C₃₀ hetero aryl group, each of R and R¹ to R³ can be independently selected from the group consisting of, but is not limited to, an unfused or fused hetero aryl group such as pyrrolyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, tetrazinyl, imidazolyl, pyrazolyl, indolyl, iso-indolyl, indazolyl, indolizinyl, pyrrolizinyl, carbazolyl, benzo-carbazolyl, dibenzo-carbazolyl, indolo-carbazolyl, indeno-carbazolyl, benzo-furo-carbazolyl, benzo-thieno-carbazolyl, carbolinyl, quinolinyl, iso-quinolinyl, phthlazinyl, quinoxalinyl, cinnolinyl, quinazolinyl, quinolizinyl, purinyl, benzo-quinolinyl, benzo-iso-quinolinyl, benzo-quinazolinyl, benzo-quinoxalinyl, acridinyl, phenazinyl, phenoxazinyl, phenothiazinyl, phenanthrolinyl, perimidinyl, phenanthridinyl, pteridinyl, naphthyridinyl, furanyl, pyranyl, oxazinyl, oxazolyl, oxadiazolyl, triazolyl, dioxinyl, benzo-furanyl, dibenzo-furanyl, thiopyranyl, xanthenyl, chromenyl, iso-chromenyl, thioazinyl, thiophenyl, benzo-thiophenyl, dibenzo-thiophenyl, difuro-pyrazinyl, benzofuro-dibenzo-furanyl, benzothieno-benzo-thiophenyl, benzothieno-dibenzo-thiophenyl, benzothieno-benzo-furanyl, benzothieno-dibenzo-furanyl, xanthene-linked spiro acridinyl, dihydroacridinyl substituted with at least one C₁-C₁₀ alkyl and N-substituted spiro fluorenyl.

As an example, each of the aromatic group or the hetero aromatic group of R and R¹ to R³ can consist of one to three aromatic or hetero aromatic rings. When the number of the aromatic or hetero aromatic rings of R and R¹ to R³ is more than three, conjugated structure in the first compound 232 becomes too long, thus, the first compound 232 can have too narrow energy bandgap. For example, each of the aryl group or the hetero aryl group of R and R¹ to R³ can be independently selected from the group consisting of, but is not limited to, phenyl, biphenyl, naphthyl, anthracenyl, pyrrolyl, triazinyl, imidazolyl, pyrazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, furanyl, benzo-furanyl, dibenzo-furanyl, thiophenyl, benzo-thiophenyl, dibenzo-thiophenyl, carbazolyl, acridinyl, carbolinyl, phenazinyl, phenoxazinyl and phenothiazinyl.

Alternatively, two adjacent R¹, and/or R² and R³ can form an unsubstituted or substituted C₃-C₃₀ alicyclic ring (e.g., a C₅-C₁₀ alicyclic ring), an unsubstituted or substituted C₃-C₃₀ hetero alicyclic ring (e.g., a C₃-C₁₀ hetero alicyclic ring), an unsubstituted or substituted C₆-C₃₀ aromatic ring (e.g., a C₆-C₂₀ aromatic ring) or an unsubstituted or substituted C₃-C₃₀ hetero aromatic ring (e.g., a C₃-C₂₀ hetero aromatic ring). The alicyclic ring, the hetero alicyclic ring, the aromatic ring and the hetero aromatic ring formed by: two adjacent R¹; or R² and R³, are not limited to specific rings. For example, the aromatic ring or the hetero aromatic ring formed by those groups can be independently selected from the group consisting of, but is not limited to, a benzene ring, a pyridine ring, an indole ring, a pyran ring, a fluorene ring unsubstituted or substituted with at least one C₁-C₁₀ alkyl group.

The first compound 232 being the organometallic compound having the structure of Formula 1-1 has a ligand with fused with multiple aromatic and/or hetero aromatic rings, thus it has narrow full-width at half maximum (FWHM) in photoluminescence spectrum. Particularly, since the first compound 232 has a rigid chemical conformation, its conformation is not rotated in the luminous process so that it can maintain good luminous lifespan. In addition, since the first compound 232 has specific ranges of photoluminescence emissions, the color purity of the light emitted from the first compound 232 can be improved.

In addition, the first compound 232 can be a heteropletic metal complex including two different bidentate ligands coordinated to the central metal atom. (n is a positive integer in Formula 1-1) The photoluminescence color purity and emission colors of the first compound 232 can be controlled with ease by combining two different bidentate ligands. Moreover, it is possible to control the color purity and emission peaks of the first compound 232 by introducing various substituents to each of the ligands. For example, the first compound 232 having the structure of Formula 1-1 can emit yellow to red colors and can improve luminous efficiency of an organic light emitting diode.

In one exemplary aspect, the first compound 232 can have the ring (a) with X³-X⁵, Y¹ and A to be represented by Formula 1-2.

wherein each of X²¹ to X²⁷ is independently CR¹ or N; Y³ is BR², CR²R³, C═O, SiR²R³, GeR²R³, PR², P═O, O, S, SO₂, Se, SeO₂, Te, TeO₂, or NR^a; and each of M, R,

, m, n, R¹ to R³ and R^a is same as defined in Formula 1-1.

In an alternative aspect, the first compound 232 can have the ring (b) with X⁸-X¹¹, Y² and B to be represented by Formula 1-3

wherein each of X³¹ to X³⁸ is independently CR¹ or N; Y⁴ is BR², CR²R³, C═O, SiR²R³, GeR²R³, PR², P═O, O, S, SO₂, Se, SeO₂, Te, TeO₂, or NR^a; each of M,

, m, n, R¹ to R³ and R^a is same as defined in Formula 1-1.

For example, M can be iridium (Ir), palladium (Pd) or platinum (Pt). X³¹ to X³⁸ can be CR¹. R¹ can be selected from the group consisting of hydrogen, protium, deuterium and a C₁-C₂₀ alkyl group unsubstituted or substituted with deuterium, or optionally, two of R¹s of X³¹ to X³³ can form a C₆-C₃₀ aromatic ring unsubstituted or substituted with a C₁-C₂₀ alkyl group. Y⁴ can be CR²R³, N^a or O. Each of R² and R³ can be independently selected from the group consisting of hydrogen, protium, deuterium, a C₁-C₂₀ alkyl group unsubstituted or substituted with deuterium and a C₆-C₃₀ aromatic group (aryl group). In addition, one of m and n can be 1, and the other one of m and n can be 2.

More particularly, in Formula 1-2, X²⁵ and X²⁶ are connected to each other to form an aromatic ring or a hetero aromatic ring so that the first compound 232 can be represented by Formula 1-4. Alternatively, in Formula 1-2, X²⁶ and X²⁷ are connected to each other to form an aromatic ring or a hetero aromatic ring so that the first compound 232 can be represented by Formula 1-5.

wherein each of X⁴¹ to X⁴⁵ is independently CR¹ or N; each of M, R,

, m, n and R¹ to R³ is same as defined in Formula 1-1; and X²¹ to X²⁴ and Y³ is same as defined in Formula 1-2;

Alternatively, in Formula 1-3, X³¹ and X³² are connected to each other to form an aromatic ring or a hetero aromatic ring so that the first compound 232 can be represented by Formula 1-6. Alternatively, in Formula 1-3, X³² and X³³ are connected to each other to form an aromatic ring or a hetero aromatic ring so that the first compound 232 can be represented by Formula 1-7.

wherein each of X⁵¹ to X⁵⁵ is independently CR¹ or N; M,

, m, n, R¹ to R³ is same as defined in Formula 1-1; and each of X³⁴ to X³⁸ and Y⁴ is same as defined in Formula 1-3.

For example, M can be iridium (Ir), palladium (Pd) or platinum (Pt). One of X³⁴ to X³⁸ and X⁵¹ to X⁵⁵ can be N, and the rest of X³⁴ to X³⁸ and X⁵¹ to X⁵⁵ can be CR¹. Y⁴ can be CR²R³, N^a, O or S. R¹ can be selected from the group consisting of hydrogen, protium, deuterium, a C₁-C₂₀ alkyl group unsubstituted or substituted with deuterium, a C₁-C₂₀ alkyl silyl group, a C₆-C₃₀ aromatic group (aryl group) or a C₃-C₃₀ hetero aromatic group (hetero aryl group). Each of R² and R³ can be independently selected from the group consisting of hydrogen, protium, deuterium, a C₁-C₂₀ alkyl group unsubstituted or substituted with deuterium, a C₃-C₃₀ alicyclic group, a C₃-C₃₀ hetero alicyclic group, a C₆-C₃₀ aromatic group (aryl group) or a C₃-C₃₀ hetero aromatic group (hetero aryl group), or optionally, two adjacent R¹, and/or R² and R³ can form a C₃-C₃₀ alicyclic ring, a C₃-C₃₀ hetero alicyclic ring, a C₆-C₃₀ aromatic ring or a C₃-C₃₀ hetero aromatic ring.

For example, in Formula 1-1, the auxiliary ligand

can be a bidentate ligand wherein Z¹ and Z² are independently selected from the group consisting of an oxygen atom, a nitrogen atom, and a phosphorus atom. The bidentate ligand can be acetylacetonate-containing ligand, or N,N′- or N,O-bidentate anionic ligand.

As an example, the center coordination metal can be iridium and the auxiliary ligand

can be an acetylacetonate-containing ligand. Namely, the first compound 232 can be represented by one of Formulas 1-8 to 1-11:

wherein R in Formulas 1-8 and 1-9 is same as defined in Formula 1-1; each of X²¹ to X²⁴, X³⁴ to X³⁸, X⁴¹ to X⁴⁵ and X⁵¹ to X⁵⁵ is independently CR¹ or N; each of Y³ and Y⁴ is independently BR², CR²R³, C═O, SiR²R³, GeR²R³, PR², P═O, O, S, SO₂, Se, SeO₂, Te or TeO₂, or NR^a; each of R¹ to R³ and R^a is same as defined in Formula 1-1; each of R¹¹ to R¹³ is independently selected from the group consisting of hydrogen, protium, deuterium, tritium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrozone group, an unsubstituted or substituted C₁-C₂₀ alkyl group, an unsubstituted or substituted C₂-C₂₀ alkenyl group, an unsubstituted or substituted C₂-C₂₀ alkynyl group, an unsubstituted or substituted C₁-C₂₀ alkoxy group, an amino group, an unsubstituted or substituted C₁-C₂₀ alkyl amino group, an unsubstituted or substituted C₁-C₂₀ alkyl silyl group, a carboxyl group, a nitrile group, an isonitrile group, a sulfanyl group, a phosphino group, an unsubstituted or substituted C₃-C₃₀ alicyclic group, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic group, an unsubstituted or substituted C₆-C₃₀ aromatic group and an unsubstituted or substituted C₃-C₃₀ hetero aromatic group; m is an integer of 1 to 3; n is an integer of 0 to 2; and wherein m+n is 3.

In Formula 1-1, M can be iridium, one of Z¹ and Z² can be an oxygen atom, and the other one of Z¹ and Z² can be a nitrogen atom. Namely, the first compound 232 can be represented by one of Formulas 1-12 to 1-15.

wherein R in Formulas 1-12 and 1-13 is same as defined in Formula 1-1; each of X²¹ to X²⁴, X³⁴ to X³⁸, X⁴¹ to X⁴⁵ and X⁵¹ to X⁵⁵ is independently CR¹ or N; each of Y³ and Y⁴ is independently BR², CR²R³, C═O, SiR²R³, GeR²R³, PR², P═O, O, S, SO₂, Se, SeO₂, Te or TeO₂, or NR^a; each of R¹ to R³ and R^a is same as defined in Formula 1-1; each of R⁶¹ to R⁶⁴ is independently selected from the group consisting of hydrogen, protium, deuterium, tritium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrozone group, an unsubstituted or substituted C₁-C₂₀ alkyl group, an unsubstituted or substituted C₂-C₂₀ alkenyl group, an unsubstituted or substituted C₂-C₂₀ alkynyl group, an unsubstituted or substituted C₁-C₂₀ alkoxy group, an amino group, an unsubstituted or substituted C₁-C₂₀ alkyl amino group, an unsubstituted or substituted C₁-C₂₀ alkyl silyl group, a carboxyl group, a nitrile group, an isonitrile group, a sulfanyl group, a phosphino group, an unsubstituted or substituted C₃-C₃₀ alicyclic group, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic group, an unsubstituted or substituted C₆-C₃₀ aromatic group and an unsubstituted or substituted C₃-C₃₀ hetero aromatic group; m is an integer of 1 to 3; n is an integer of 0 to 2; and wherein m+n is 3.

In Formula 1-1, M can be iridium, Z¹ and Z² can be a nitrogen atom. Namely, the first compound 232 can be represented by one of Formulas 1-16 to 1-23.

wherein R in Formulas 1-16, 1-17, 1-20 and 1-21 is same as defined in Formula 1-1; each of X²¹ to X²⁴, X³⁴ to X³⁸, X⁴¹ to X⁴⁵ and X⁵¹ to X⁵⁵ is independently CR¹ or N; each of Y³ and Y⁴ is independently BR², CR²R³, C═O, SiR²R³, GeR²R³, PR², P═O, O, S, SO₂, Se, SeO₂, Te or TeO₂, or NR^a; each of R¹ to R³ and R^a is same as defined in Formula 1-1; m is an integer of 1 to 3, n is an integer of 0 to 2, and wherein m+n is 3; each of R⁷¹ to R⁷³ in Formulas 1-16 to 1-19 is independently selected from the group consisting of hydrogen, protium, deuterium, tritium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrozone group, an unsubstituted or substituted C₁-C₂₀ alkyl group, an unsubstituted or substituted C₂-C₂₀ alkenyl group, an unsubstituted or substituted C₂-C₂₀ alkynyl group, an unsubstituted or substituted C₁-C₂₀ alkoxy group, an amino group, an unsubstituted or substituted C₁-C₂₀ alkyl amino group, an unsubstituted or substituted C₁-C₂₀ alkyl silyl group, a carboxyl group, a nitrile group, an isonitrile group, a sulfanyl group, a phosphino group, an unsubstituted or substituted C₃-C₃₀ alicyclic group, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic group, an unsubstituted or substituted C₆-C₃₀ aromatic group and an unsubstituted or substituted C₃-C₃₀ hetero aromatic group; each of R⁸¹ to R⁸⁵ in Formulas 1-20 to 1-23 is independently selected from the group consisting of hydrogen, protium, deuterium, tritium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrozone group, an unsubstituted or substituted C₁-C₂₀ alkyl group, an unsubstituted or substituted C₂-C₂₀ alkenyl group, an unsubstituted or substituted C₂-C₂₀ alkynyl group, an unsubstituted or substituted C₁-C₂₀ alkoxy group, an amino group, an unsubstituted or substituted C₁-C₂₀ alkyl amino group, an unsubstituted or substituted C₁-C₂₀ alkyl silyl group, a carboxyl group, a nitrile group, an isonitrile group, a sulfanyl group, a phosphino group, an unsubstituted or substituted C₃-C₃₀ alicyclic group, an unsubstituted or substituted C₃-C₃₀ hetero alicyclic group, an unsubstituted or substituted C₆-C₃₀ aromatic group and an unsubstituted or substituted C₃-C₃₀ hetero aromatic group.

For example, the first compound 232 represented by Formula 1-8 can be one of the compounds in Formula 1-24.

For example, the first compound 232 represented by Formula 1-9 can be one of the compounds in Formula 1-25.

For example, the first compound 232 represented by Formula 1-10 can be one of the compounds in Formula 1-26.

When Y4 in Formula 1-11 is an unsubstituted or substituted carbon atom, i.e., CH₂ or CR²R³, the first compound 232 can be one of the compounds in Formula 1-27.

When Y4 in Formula 1-11 is an unsubstituted or substituted hetero atom, i.e., NR^a or O, the first compound 232 can be one of the compounds in Formula 1-28.

For example, the first compound 232 can be one of the compounds in Formula 1-29.

Synthesis Example 1: Synthesis of Compound 369 (Compound RD7 in Formula 8)

Synthesis of Compound B-1

Compound A-1 (5-bromoquinoline, 50.0 g, 240.33 mmol), propan-2-ylboronic acid (42.25 g, 480.65 mmol), Pd₂(dba)₃ (tris(dibenzylideneacetone)dipalladium (0), 6.6 g, 3 mol%), SPhos (2-dicyclichexhylphosphino-2′,6′-dimethoxybiphenyl, 9.9 g, 24.03 mmol), potassium phosphate monohydrate (276.71 g, 1.2 mol) and toluene (1000 mL) were put into a reaction vessel, and then the solution was stirred at 120° C. for 12 hours. After the reaction was complete, the solution was cooled down to a room temperature and the solution was extracted with ethyl acetate to remove the solvent. A crude product was purified with column chromatography (eluent: ethyl acetate and hexane) to give the compound B-1 (5-isopropylquinoline, 35.4 g, yield: 86%). MS (m/z): 171.10

Synthesis of Compound C-1

The compound B-1 (5-isopropylquinoline, 35.4 g, 206.73 mmol), mCBPA (3-chloroperbenzoic acid, 53.5 g, 310.09 mmol) and dichloromethane (500 mL) were put into a reaction vessel, and then the solution was stirred at room temperature for 3 hours. Sodium sulfite (80 g) was added into the solution, the organic layer was washed with water and then placed under reduced pressure to give the compound C-1 (27.5 g, yield: 71%). MS (m/z): 187.10

Synthesis of Compound D1

The compound C-1 (27.5 g, 146.87 mmol) dissolved in toluene (500 mL) was put into a reaction vessel, phosphoryl trichloride (POCl₃, 45.0 g, 293.74 mmol) and diisopropylethylamine (DIPEA, 38.0 g, 293.74 mmol) were added into the vessel, and then the solution was stirred at 120° C. for 4 hours. The reactants ware placed under reduced pressure to remove the solvent and extracted with dichloromethane, and then the organic layer was washed with water. Water was removed with MgSO₄, the crude product was filtered and then the solvent was removed. The crude product was purified with column chromatography to give the compound D-1 (2-chloro-5-isopropylquinoline, 11.8 g, yield: 39%). MS (m/z); 205.07

Synthesis of Compound F-1

The compound E-1 (1-naphthoic acid, 50 g, 290.30 mmol) and SOCl₂ (200 mL) were put into a reaction vessel, the solution was refluxed for 4 hours, SOCl₂ was removed, ethanol (200 mL) was added, and then the solution was stirred at 70° C. for 7 hours. Water was added, the organic layer was extracted with ether, water was removed with MgSO₄ and then the solution was filtered. The solution was placed under reduced pressure to remove the solvent and to give the compound F-1 (ethyl-1-naphtoate, 53.2 g, yield: 90%). MS (m/z): 200.08

Synthesis of Compound G-1

The compound F-1 (ethyl-1-naphtoate, 52.3 g, 261.20 mmol), NBS (N-bromosuccinimide, 51.14 g, 287.32 mmol), Pd(OAc)₂ (palladium(II)acetate, 0.6 g, 2.61 mmol), Na₂S₂O₈ (124.4 g, 522.40 mmol) and dichloromethane (500 mL) were put into a reaction vessel, TfOH (Trifluoromethanesulfonic acid, 19.6 g, 130.60 mmol) was added into the reaction vessel, and then the solution was stirred at 70° C. for 1 hour. The reactants were cooled to room temperature, the reaction was complete using NaHCO₃, and then was extracted with dichloromethane. Water in the organic layer was removed with MgSO₄, the solvent was removed, and then the crude product was purified with column chromatography (eluent: petroleum ether and ethyl acetate) to give the compound G-1 (ethyl-8-bromonaphthalene-1-carboxylate, 54.0 g, yield: 74%). MS (m/z): 277.99

Synthesis of Compound H-1

The compound G-1 (ethyl-8-bromonaphthalene-1-carboxylate, 54.0 g, 193.46 mmol), bis(pinacolato)diboron (58.6 g, 232.15 mmol), Pd(dppf)Cl₂ ([1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II), 7.1 g, 9.67 mmol), KOAc (potassium acetate, 57.0 g, 580.37 mmol) and 1,4-dioxane (500 mL) were put into a reaction vessel, and then the solution was stirred at 100° C. for 4 hours. The reactants were cooled to room temperature, extracted with ethyl acetate, then water in the organic layer was removed with MgSO₄, and then the solution was filtered and placed under reduced pressure to remove the solvent. The crude product was purified with column chromatography (eluent: hexane and ethyl acetate) to give the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-carboxylate, 54.3 g, yield: 86%). MS (m/z): 326.17

Synthesis of Compound I-1

The compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol), the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-caroboylate, 17.45 g, 53.48 mmol), Pd(OAc)₂ (0.5 g, 2.43 mmol), PPh₃ (chloro(tripphenylphosphine)[2-(2′-amino-1,1′-biphenyl)]palladium(II), 2.6 g, 9.72 mmol), K₂CO₃ (20.2 g, 145.86 mmol), 1,4-dioxane (100 mL) and water (100 mL) were put into a reaction vessel, and then the solution was stirred at 100° C. for 12 hours. The reactants ware cooled to room temperature and extracted with ethyl acetate, water in the organic layer was removed with MgSO₄, and then the solution was filtered and placed under reduced pressure to remove the solvent. The crude product was purified with column chromatography (eluent: hexane and ethyl acetate) to give the compound I-1 (ethyl 8-(5-isopropylquinolin-2-yl)naphthalene-1-carboxylate, 13.5 g, yield: 75%). MS (m/z): 369.17

Synthesis of Compound J-1

The compound I-1 (ethyl 8-(5-isopropylquinolin-2-yl)naphthalene-1-carboxylate, 13.5 g, 36.6 mmol) and THF (100 mL) were put into a reaction vessel and then CH₃MgBr (21.8 g, 182.70 mmol) was added dropwise into the reaction vessel at 0° C. The solution was raised to room temperature, the reaction was complete after 12 hours, was extracted with ethyl acetate, water in the organic layer was removed with MgSO₄, and then the solution was filtered and placed under reduced pressure to remove the solvent. The crude product was purified with column chromatography (eluent: hexane and ethyl acetate) to give the compound J-1 (2-(1-(5-isopropylquinolin-2-yl)naphthalene-8-yl)propan-2-ol, 6.9 g, yield: 53%). MS (m/z): 355.19

Synthesis of Compound K-1

The compound J-1 (2-(1-(5-isopropylquinolin-2-yl)naphthalene-8-yl)propan-2-ol, 20 g, 56.26 mmol) and a mixed aqueous solution (200 mL) of acetic acid and sulfuric acid were put into a reaction vessel, and then the solution was refluxed for 16 hours. After the reaction was complete, the solution was cooled to room temperature, and then the reactants were added dropwise into sodium hydroxide aqueous solution with ice. The organic layer was extracted with dichloromethane and water was removed with MgSO₄. The solvent was removed and then the crude product was recrystallized with toluene and ethanol to give the compound K-1 (9-isopropyl-7,7-dimethyl-7H-naphtho[1,8-bc]acridine, 10.25 g, yield: 54%) of yellow solid. MS (m/z): 337.18

Synthesis of Compound L-1

The compound K-1 (10.25 g, 30.37 mmol), 2-ethoxyethanol (200 mL) and distilled water (50 mL) were put into a reaction vessel, the solution was bubbled with nitrogen for 1 hour, IrCl₃·H₂O (4.4 g, 13.81 mmol) was added into the reaction vessel, and then the solution was refluxed for 2 days. After the reaction was complete, the solution was cooled to room temperature, and then the obtained solid was filtered. The solid was washed with hexane and water and dried to give the compound L-1 (4.0 g, yield: 32%).

Synthesis of Compound 369

The compound L-1 (4.0 g, 2.21 mmol), 3,7-diethylnonane-4,6-dione (4.7 g, 22.09 mmol), Na₂CO₃ (4.7 g, 441.8 mmol) and 2-ethoxyethanol (100 mL) were put into a reaction vessel, and then the solution was stirred slowly for 24 hours. After the reaction was complete, dichloromethane was added into the reactants to dissolve product, and then the solution was filtered with celite. The solvent was removed, the solid was filtered using filter paper, then the filtered solid was put into isopropanol, and then the solution was stirred. The solution was filtered to remove isopropanol, and the solution was dried and recrystallized with dichloromethane and isopropanol. High purity of compound 369 (2.5 g, yield: 53%) was obtained using a sublimation purification instrument. MS (m/z): 1076.48

Synthesis Example 2: Synthesis of Compound 2 (Compound RD5 in Formula 8)

Synthesis of Compound C-2

The compound C-2 (ethyl 3-6-(isopropylisoqunolin-1-yl)-naphthoate (14.4 g, yield: 80%) was obtained by repeating the synthesis process of the compound I-1 except that the compound A-2 (1-chloro-6-isopropylisoquinoline, 10 g, 48.62 mmol) and compound B-2 (ethyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)-2-naphthoate (17.45 g, 53.50 mmol) were used instead of the compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol) and the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-carboxlate, respectively. MS (m/z): 369.17

Synthesis of Compound D-2

The compound D-2 (2-(3-(6-isopropylisoquinolin-1-yl)naphthalen-2-yl)propan-2-ol, 6.9 g, yield: 50%) was obtained by repeating the synthesis process of the compound J-1 except that the compound C-2 (ethyl 3-(6-isopropylisoquinolin-1-yl)-2-naphthoate, 14.4 g, 39.0 mmol) was used instead of the compound I-1 (ethyl 8-(5-isopropylquinolin-2-yl)naphthalene-1-caroboxylate, 13.5 g, 36.5 mmol). MS (m/z): 355.19

Synthesis of Compound E-2

The compound E-2 (5-isopropyl-7,7-dimethyl-7H-benzo[de]naphtha[2,3-h]quinolone, 11.39 g, yield: 60%) was obtained by repeating the synthesis process of the Compound K-1 except that the compound D-2 (2-(3-(6-isopropylisoquinolin-1-yl)naphthalen-2-yl)propan-2-ol, 20 g, 56.26 mmol) was used instead of the compound J-1 (2-(1-(5-isopropylquinolin-2-yl)naphthalene-8-yl)propan-2-ol, 20 g, 56.26 mmol). MS (m/z): 337.18

Synthesis of Compound F-2

The compound F-2 (4.7 g, yield: 34%) was obtained by repeating the synthesis process of the Compound L-1 except that the compound E-2 (11.39 g, 33.76 mmol) was used instead of the compound K-1 (10.25 g, 30.37 mmol).

Synthesis of Compound 2

The compound 2 (3.2 g, yield: 57%) was obtained by repeating the synthesis process of compound 369 except that the Compound F-2 (4.7 g, 2.61 mmol) was used instead of the compound L-1 (4.0 g, 2.21 mmol). MS (m/z): 1076.48

Synthesis Example 3: Synthesis of Compound 501 (Compound RD8 in Formula 8)

Synthesis of Compound C-3

The compound C-3 (ethyl 8-6-(isopropylisoquinolin-3-yl)-naphthoate, 12.6 g, yield: 70%) was obtained by repeating the synthesis process of the compound I-1 except that the compound A-3 (3-chloro-6-isopropylisoquinoline, 10 g, 48.62 mmol) was used instead of the compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol). MS (m/z): 369.17

Synthesis of Compound D-3

The compound D-3 (2-(8-(6-isopropylisoquinolin-3-yl)naphthalen-1-yl)propan-2-ol, 7.3 g, yield: 60%) was obtained by repeating the synthesis process of the Compound J-1 except that the compound C-3 (ethyl 8-(6-isopropylisoquinolin-3-yl)naphthoate, 12.6 g, 34.0 mmol) was used instead of the compound I-1 (ethyl 8-(5-isopropylquinolin-2-yl)naphthalene-1-caroboxylate, 13.5 g, 36.5 mmol). MS (m/z): 355.19

Synthesis of Compound E-3

The compound E-3 (2-isopropyl-13,13-dimethyl-13H-naphtho[1,8-bc]phenanthridine, 4.3 g, yield: 62%) was obtained by repeating the synthesis process of the Compound K-1 except that the compound D-3 (2-(8-(6-isopropylisoquinolin-3-yl)naphthalen-1-yl)propan-2-ol, 7.3 g, 20.4 mmol) was used instead of the compound J-1 (2-(1-(5-isopropylquinolin-2-yl)naphthalene-8-yl)propan-2-ol, 20 g, 56.26 mmol). MS (m/z): 337.18

Synthesis of Compound F-3

The compound F-3 (1.9 g, yield: 37%) was obtained by repeating the synthesis process of the compound L-1 except that the compound E-3 (2-isopropyl-13,13-dimethyl-13H-naphtho[1,8-bc]phenanthridine, 4.3 g, 12.6 mmol) was used instead of the compound K-1 (10.25 g, 30.37 mmol).

Synthesis of Compound 501

The compound 501 (1.4 g, yield; 60%) was obtained by repeating the synthesis process of compound 369 except that the compound F-3 (1.9 g, 1.07 mmol) was used instead of the compound L-1 (4.0 g, 2.21 mmol). MS (m/z); 1076.48

Synthesis Example 4: Synthesis of Compound 182 (Compound RD6 in Formula 8)

Synthesis of Compound C-4

The compound C-4 (12.2 g, yield: 68%) was obtained by repeating the synthesis process of the compound I-1 except that the compound A-4 (10 g, 48.62 mmol) and the compound B-4 (17.45 g, 53.48 mmol) were used instead of the compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol) and the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-carboxlate (17.45 g, 53.48 mmol), respectively. MS (m/z): 369.17

Synthesis of Compound D-4

The compound D-4 (6.8 g, yield: 58%) was obtained by repeating the synthesis process of the compound J-1 except that the compound C-4 (12.2 g, 33.02 mmol) was used instead of the compound I-1 (ethyl 8-(5-isopropylquinolin-2-yl)naphthalene-1-caroboxylate, 13.5 g, 36.5 mmol). MS (m/z): 355.19

Synthesis of Compound E-4

The compound E-4 (4.1 g, yield: 63%) was obtained by repeating the synthesis process of the compound K-1 except that the compound D-4 (6.8 g, 19.15 mmol) was used instead of the compound J-1 (2-(1-(5-isopropylquinolin-2-yl)naphthalene-8-yl)propan-2-ol, 20 g, 56.26 mmol). MS (m/z): 337.18

Synthesis of Compound F-4

The compound F-4 (2.1 g, yield: 42%) was obtained by repeating the synthesis process of the compound L-1 except that the compound E-4 (4.1 g, 12.15 mmol) was used instead of the compound K-1 (10.25 g, 30.37 mmol).

Synthesis of Compound 182

The compound 182 (1.1 g, yield: 57%) was obtained by repeating the synthesis process of compound 369 except that the compound F-4 (2.1 g, 1.17 mmol) was used instead of the compound L-1 (4.0 g, 2.21 mmol). MS (m/z): 1076.48

Synthesis Example 5: Synthesis of Compound 154 (Compound RD9 in Formula 8)

Synthesis of Compound C-5

The compound C-5 (11.8 g, yield: 78%) was obtained by repeating the synthesis process of the compound I-1 except that the compound A-5 (10 g, 48.62 mmol) and the compound B-5(14.4 g, 53.48 mmol) were used instead of the compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol) and the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-carboxlate (17.45 g, 53.48 mmol), respectively. MS (m/z): 312.16

Synthesis of Compound D-5

The compound C-5 (11.8 g, 37.75 mmol) and dimethylsulfoxide (DMSO) (200 mL) were put into a reaction vessel, then CuI (10.8 g, 56.66 mmol) was added into the reaction vessel, and then the solution was refluxed at 150° C. for 12 hours. After the reaction was complete, the solution was filtered, extracted with ethyl acetate, water in the organic layer was removed with MgSO₄, and then the solution was filtered and placed under reduced pressure to remove the solvent. The crude product was purified with column chromatography (eluent: hexane and ethyl acetate) to give the compound D-5 (4.6 g, yield: 39%). MS (m/z): 310.15

Synthesis of Compound E-5

The compound D-5 (4.6 g, 14.82 mmol), 1-iodobenzene (3.3 g, 16.30 mmol) and toluene (200 mL) were put into a reaction vessel, then Pd₂(dba)₃ (0.7 g, 0.74 mmol), P(t-Bu)₃ (Tri-tert-butylphosphine, 0.3 g, 1.48 mmol) and NaOt-Bu (sodium tert-butoxide, 2.8 g, 29.64 mmol) were added into the reaction vessel, and then the solution was refluxed at 100° C. for 24 hours. After the reaction was complete, the solution was extracted with ethyl acetate, water in the organic layer was removed with MgSO₄, and then the solution was filtered and placed under reduced pressure to remove the solvent. The crude product was purified with column chromatography (eluent: hexane and ethyl acetate) to give the compound E-5 (4.6 g, yield: 81%). MS (m/z): 386.18

Synthesis of Compound F-5

The compound F-5 (2.5 g, yield: 47%) was obtained by repeating the synthesis process of the compound L-1 except that the compound E-5 (4.6 g, 11.90 mmol) was used instead of the compound K-1 (10.25 g, 30.37 mmol).

Synthesis of Compound 154

The compound 154 (1.4 g, yield: 46%) was obtained by repeating the synthesis process of compound 369 except that the compound F-5 (2.5 g, 1.25 mmol) was used instead of the compound L-1 (4.0 g, 2.21 mmol). MS (m/z): 1174.47

Synthesis Example 6: Synthesis of Compound 334 (Compound RD10 in Formula 8)

Synthesis of Compound C-6

The compound C-6 (11.4 g, yield: 75%) was obtained by repeating the synthesis process of the compound I-1 except that the compound A-6 (10 g, 48.62 mmol) and the compound B-6 (14.4 g, 53.48 mmol) were used instead of the compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol) and the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-carboxlate (17.45 g, 53.48 mmol), respectively. MS (m/z): 312.16

Synthesis of Compound D-6

The compound D-6 (6.8 g, yield: 58%) was obtained by repeating the synthesis process of the compound D5 except that the compound C-6 (11.4 g, 35.49 mmol) was used instead of the compound C-5 (11.8 g, 37.77 mmol). MS (m/z): 310.15

Synthesis of Compound E-6

The compound E-6 (5.6 g, yield: 78%) was obtained by repeating the synthesis process of the compound E-5 except that the compound D-6 (5.8 g, 18.61 mmol) was used instead of the compound D-5 (4.6 g, 14.82 mmol). MS (m/z): 386.18

Synthesis of Compound F-6

The compound F-6 (2.8 g, yield: 42%) was obtained by repeating the synthesis process of the compound L-1 except that the compound E-6 (5.6 g, 14.49 mmol) was used instead of the compound K-1 (10.25 g, 30.37 mmol).

Synthesis of Compound 334

The compound 334 (2.0 g, yield: 61%) was obtained by repeating the synthesis process of compound 369 except that the compound F-6 (2.8 g, 1.38 mmol) was used instead of the compound L-1 (4.0 g, 2.21 mmol). MS (m/z): 1174.47

Synthesis Example 7: Synthesis of Compound 465 (Compound RD11 in Formula 8)

Synthesis of Compound C-7

The compound C-7 (9.0 g, yield: 50%) was obtained by repeating the synthesis process of the compound I-1 except that the compound A-7 (10 g, 48.62 mmol) and the compound B-7 (14.4 g, 53.48 mmol) were used instead of the compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol) and the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-carboxlate (17.45 g, 53.48 mmol), respectively. MS (m/z): 312.16

Synthesis of Compound D-7

The compound D-7 (7.4 g, yield: 55%) was obtained by repeating the synthesis process of the compound D-5 except that the compound C-7 (9.0 g, 28.69 mmol) was used instead of the compound C-5 (11.8 g, 37.77 mmol). MS (m/z): 310.15

Synthesis of Compound E-7

The compound E-7 (4.7 g, yield: 77%) was obtained by repeating the synthesis process of the compound E-5 except that the compound D-7 (4.9 g, 15.78 mmol) was used instead of the compound D-5 (4.6 g, 14.82 mmol). MS (m/z): 386.18

Synthesis of Compound F-7

The compound F-7 (2.6 g, yield: 48%) was obtained by repeating the synthesis process of the compound L-1 except that the compound E-7 (4.7 g, 12.16 mmol) was used instead of the compound K-1 (10.25 g, 30.37 mmol).

Synthesis of Compound 465

The compound 465 (2.0 g, yield: 64%) was obtained by repeating the synthesis process of compound 369 except that the compound F-7 (2.6 g, 1.33 mmol) was used instead of the compound L-1 (4.0 g, 2.21 mmol). MS (m/z): 1174.47

Synthesis Example 8: Synthesis of Compound 582 (Compound RD12 in Formula 8)

Synthesis of Compound C-8

The compound C-8 (9.0 g, yield: 50%) was obtained by repeating the synthesis process of the compound I-1 except that the compound A-8 (10 g, 48.62 mmol) and the compound B-8 (14.4 g, 53.48 mmol) were used instead of the compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol) and the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-carboxlate (17.45 g, 53.48 mmol), respectively. MS (m/z): 312.16

Synthesis of Compound D-8

The compound D-8 (7.4 g, yield: 55%) was obtained by repeating the synthesis process of the compound D-5 except that the compound C-8 (10.0 g, 35.01 mmol) was used instead of the compound C-5 (11.8 g, 37.77 mmol). MS (m/z): 310.15

Synthesis of Compound E-8

The compound E-8 (5.3 g, yield: 83%) was obtained by repeating the synthesis process of the compound E-5 except that the compound D-8 (5.1 g, 15.45 mmol) was used instead of the compound D-5 (4.6 g, 14.82 mmol). MS (m/z): 386.18

Synthesis of Compound F-8

The compound F-8 (2.4 g, yield: 39%) was obtained by repeating the synthesis process of the compound L-1 except that the compound E-8 (5.3 g, 13.66 mmol) was used instead of the compound K-1 (10.25 g, 30.37 mmol).

Synthesis of Compound 582

The compound 582 (1.8 g, yield: 64%) was obtained by repeating the synthesis process of compound 369 except that the compound F-8 (2.4 g, 1.1 mmol) was used instead of the compound L-1 (4.0 g, 2.21 mmol). MS (m/z): 1174.47

Synthesis Example 9: Synthesis of Compound 168 (Compound RD13 in Formula 8)

Synthesis of Compound C-9

The compound C-9 (9.9 g, yield: 67%) was obtained by repeating the synthesis process of the compound I-1 except that the compound A-9 (10 g, 44.71 mmol) and the compound B-9 (13.3 g, 49.18 mmol) were used instead of the compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol) and the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-carboxlate (17.45 g, 53.48 mmol), respectively. MS (m/z): 331.14

Synthesis of Compound D-9

The compound C-9 (9.9 g, 29.88 mmol) and DMF (100 mL) were put into a reaction vessel, and the compound C-9 was dissolved in DMF, K₂CO₃ (12.4 g, 89.62 mmol) was added into the reaction vessel, and then the solution was stirred at 100° C. for 1 hour. After the reaction was complete, the solution was cooled to room temperature and then ethanol (100 mL) was added into the reaction vessel. After the mixture was distilled under reduced pressure, the reactants were recrystallized with chloroform/ethyl acetate to give the compound D-9 (4.9 g, yield: 53%). MS (m/z): 311.13

Synthesis of Compound E-9

The compound E-9 (3.1 g, yield: 50%) was obtained by repeating the synthesis process of the compound L-1 except that the compound D-9 (4.9 g, 15.83 mmol) was used instead of the compound K-1 (10.25 g, 30.37 mmol).

Synthesis of Compound 168

The compound 168 (2.0 g, yield: 54%) was obtained by repeating the synthesis process of compound 369 except that the compound E-9 (3.1 g, 1.80 mmol) was used instead of the Compound L-1 (4.0 g, 2.21 mmol). MS (m/z): 1024.38

Synthesis Example 10: Synthesis of Compound 348 (Compound RD14 in Formula 8)

Synthesis of Compound C-10

The compound C-10 (9.0 g, yield: 64%) was obtained by repeating the synthesis process of the compound I-1 except that the compound A-10 (10 g, 44.71 mmol) and the compound B-10 (13.3 g, 49.18 mmol) were used instead of the compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol) and the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-carboxlate (17.45 g, 53.48 mmol), respectively. MS (m/z): 331.14

Synthesis of Compound D-10

The compound D-10 (5.0 g, yield: 55%) was obtained by repeating the synthesis process of the compound D-9 except that the compound C-10 (9.6 g, 29.06 mmol) was used instead of the compound C-9 (9.9 g, 28.88 mmol). MS (m/z): 311.13

Synthesis of Compound E-10

The compound E-10 (3.5 g, yield: 57%) was obtained by repeating the synthesis process of the compound L-1 except that the compound D-10 (5.0 g, 15.98 mmol) was used instead of the compound K-1 (10.25 g, 30.37 mmol).

Synthesis of Compound 348

The compound 348 (1.8 g, yield: 43%) was obtained by repeating the synthesis process of compound 369 except that the compound E-10 (3.5 g, 2.07 mmol) was used instead of the compound L-1 (4.0 g, 2.21 mmol). MS (m/z): 1024.38

Synthesis Example 11: Synthesis of Compound 483 (Compound RD15 in Formula 8)

Synthesis of Compound C-11

The compound C-11 (7.9 g, yield: 53%) was obtained by repeating the synthesis process of the compound I-1 except that the compound A-11 (10 g, 44.71 mmol) and the compound B-11 (13.3 g, 49.18 mmol) were used instead of the Compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol) and the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-carboxlate (17.45 g, 53.48 mmol), respectively. MS (m/z): 331.14

Synthesis of Compound D-11

The compound D-11 (3.8 g, yield: 51%) was obtained by repeating the synthesis process of the compound D-9 except that the compound C-11 (7.9 g, 23.07 mmol) was used instead of the compound C-9 (9.9 g, 28.88 mmol). MS (m/z): 311.13

Synthesis of Compound E-11

The compound E-11 (3.0 g, yield: 63%) was obtained by repeating the synthesis process of the compound L-1 except that the compound D-11 (3.8 g, 12.20 mmol) was used instead of the compound K-1 (10.25 g, 30.37 mmol).

Synthesis of Compound 483

The compound 483 (1.6 g, yield: 44%) was obtained by repeating the synthesis process of compound 369 except that the compound E-11 (3.0 g, 1.75 mmol) was used instead of the compound L-1 (4.0 g, 2.21 mmol). MS (m/z): 1024.38

Synthesis Example 12: Synthesis of Compound 598 (Compound RD16 in Formula 8)

Synthesis of Compound C-12

The compound C-12 (9.8 g, yield: 66%) was obtained by repeating the synthesis process of the compound I-1 except that the compound A-12 (10 g, 44.71 mmol) and the compound B-12 (13.3 g, 49.18 mmol) were used instead of the compound D-1 (2-chloro-5-isopropylquinoline, 10 g, 48.62 mmol) and the compound H-1 (ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxanborolan-2-yl)naphthalene-1-carboxlate (17.45 g, 53.48 mmol), respectively. MS (m/z): 331.14

Synthesis of Compound D-12

The compound D-12 (5.0 g, yield: 54%) was obtained by repeating the synthesis process of the compound D-9 except that the compound C-12 (9.8 g, 29.51 mmol) was used instead of the compound C-9 (9.9 g, 28.88 mmol). MS (m/z): 311.13

Synthesis of Compound E-12

The compound E-12 (3.4 g, yield: 55%) was obtained by repeating the synthesis process of the compound L-1 except that the compound D-12 (5.0 g, 15.93 mmol) was used instead of the compound K-1 (10.25 g, 30.37 mmol).

Synthesis of Compound 598

The compound 598 (1.6 g, yield: 39%) was obtained by repeating the synthesis process of compound 369 except that the compound E-12 (3.4 g, 1.99 mmol) was used instead of the compound L-1 (4.0 g, 2.21 mmol). MS (m/z): 1024.38

Synthesis Example 13: Synthesis of Compound RD1 (Compound 4 in Formula 1-24)

Synthesis of Compound B-1

The compound A-1 (1-chloro-6-isobutylisoquinoline, 10 g, 45.51 mmol), ethyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-naphthoate (16.3 g, 50.06 mmol), Pd(OAc)₂ (0.51 g, 2.28 mmol), PPh₃ (2.39 g, 0.91 mmol), K₂CO₃ (18.9 g, 136.53 mmol), 1-4-dioxane (100 mL) and water (100 mL) were stirred at 100° C. for 12 hours. After cooling to room temperature, extraction was performed with ethyl acetate, and water in the organic layer was removed using MgSO₄. Then, the mixture was filtered under reduced pressure to remove the solvent. The mixture was wet-purified using hexane and ethyl acetate to obtain the compound B-1 (10 g, 26.07 mmol). (yield: 57%)

Synthesis of Compound C-1

The compound B-1 (ethyl 3-(6-isobutylisoquinolin-1-yl)-2-naphthoate, 10 g, 26.07 mmol) and THF (100 mL) were added, and CH₃MgBr (15.5 g, 130 mmol) was slowly added at 0° C. The temperature was raised to room temperature, and the reaction was terminated after 12 hours. The mixture was extracted with ethyl acetate, water in the organic layer was removed using MgSO₄, and the solvent was removed under reduced pressure. The mixture was wet-purified using hexane and ethyl acetate, and the compound C-1 (7 g, 18.94 mmol) was obtained. (yield: 73%)

Synthesis of Compound D-1

The compound C-1 (2-(3-(6-isobutylisoquinolin-1-yl)naphthalen-2-yl)propan-2-ol, 10 g, 27.06 mmol) was added to a mixed aqueous solution of acetic acid and sulfuric acid (200 mL), and the mixture was reflux and stirred for 16 hours. After completion of the reaction, the temperature was lowered to room temperature, and the reactant was slowly added to the sodium hydroxide aqueous solution. After extracting the organic layer using dichloromethane and removing water using MgSO4, the organic solvent was removed under reduced pressure. The mixture was recrystallized using toluene and ethanol to obtain the compound D-1 (5 g, 14.22 mmol) in a yellow solid state. (yield: 53%)

Synthesis of Compound E-1

The compound D-1 (5-isobutyl-7,7-dimethyl-7H-benzo[de]naphtho[2,3-h]quinoline, 10 g, 28.45 mmol), 2-ethoxyethanol (200 mL) and distilled water (50 mL) were added, and nitrogen was injected to the mixture for 1 hour. IrCl3·H2O (4.5 g, 12.93 mmol) was put in the reaction vessel and refluxed for 2 days. After completion of the reaction, the temperature was lowered to room temperature and the resulting solid was filtered. After washing the solid with methanol and drying the solid, the compound E-1 (7.0 g, 6.05 mmol) was obtained. (yield: 21%)

Synthesis of Compound RD1

The compound E-1 (10 g, 8.64 mmol), 3,7-diethylnonane-4,6-dione (18.3 g, 86.4 mmol) and Na₂CO₃ (18.3 g, 172.8 mmol) were added and dissolved in 2-ethoxyethanol (100 mL). The mixture was slowly stirred for 24 hours. After completion of the reaction, the product was filtered using dichloromethane. After removing the solvent, the solid was filtered. The filtered solid was added to isopropanol and stirred, and then the filtered solid was dried. Recrystallization and sublimation purification using dichloromethane and isopropanol were performed to obtain the compound RD1 with high purity (5 g, 4.53 mmol). (yield: 52%)

Synthesis Example 14: Synthesis of Compound RD2 (Compound 184 in Formula 1-25)

Synthesis of Compound B-2

The compound A-2 (1-chloro-6-isobutylisoquinoline, 10 g, 45.51 mmol), ethyl 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-naphthoate (16.3 g, 50.06 mmol), Pd(OAc)₂ (0.51 g, 2.28 mmol), PPh₃ (2.39 g, 0.91 mmol), K₂CO₃ (18.9 g, 136.53 mmol), 1-4-dioxane (100 mL) and water (100 mL) were stirred at 100° C. for 12 hours. After cooling to room temperature, extraction was performed with ethyl acetate, and water in the organic layer was removed using MgSO₄. Then, the mixture was filtered under reduced pressure to remove the solvent. The mixture was wet-purified using hexane and ethyl acetate to obtain the compound B-2 (9 g, 23.47 mmol). (yield: 52%)

Synthesis of Compound C-2

The compound B-2 (ethyl 2-(6-isobutylisoquinolin-1-yl)-1-naphthoate, 10 g, 26.07 mmol) and THF (100 mL) were added, and CH₃MgBr (15.5 g, 130 mmol) was slowly added at 0° C. The temperature was raised to room temperature, and the reaction was terminated after 12 hours. The mixture was extracted with ethyl acetate, water in the organic layer was removed using MgSO₄, and the solvent was removed under reduced pressure. The mixture was wet-purified using hexane and ethyl acetate, and the compound C-2 (6 g, 16.23 mmol) was obtained. (yield: 62%)

Synthesis of Compound D-2

The compound C-2 (2-(2-(6-isobutylisoquinolin-1-yl)naphthalen-1-yl)propan-2-ol, 10 g, 27.06 mmol) was added to a mixed aqueous solution of acetic acid and sulfuric acid (200 mL), and the mixture was reflux and stirred for 16 hours. After completion of the reaction, the temperature was lowered to room temperature, and the reactant was slowly added to the sodium hydroxide aqueous solution. After extracting the organic layer using dichloromethane and removing water using MgSO4, the organic solvent was removed under reduced pressure. The mixture was recrystallized using toluene and ethanol to obtain the compound D-2 (4 g, 11.38 mmol) in a yellow solid state. (yield: 42%)

Synthesis of Compound E-2

The compound D-2 (5-isobutyl-7,7-dimethyl-7H-benzo[de]naphtho[1,2-h]quinoline, 10 g, 28.45 mmol), 2-ethoxyethanol (200 mL) and distilled water (50 mL) were added, and nitrogen was injected to the mixture for 1 hour. IrCl3·H2O (4.5 g, 12.93 mmol) was put in the reaction vessel and refluxed for 2 days. After completion of the reaction, the temperature was lowered to room temperature and the resulting solid was filtered. After washing the solid with methanol and drying the solid, the compound E-2 (10 g, 8.65 mmol) was obtained. (yield: 30%)

Synthesis of Compound RD2

The compound E-2 (10 g, 8.64 mmol), 3,7-diethylnonane-4,6-dione (18.3 g, 86.4 mmol) and Na₂CO₃ (18.3 g, 172.8 mmol) were added and dissolved in 2-ethoxyethanol (100 mL). The mixture was slowly stirred for 24 hours. After completion of the reaction, the product was filtered using dichloromethane. After removing the solvent, the solid was filtered. The filtered solid was added to isopropanol and stirred, and then the filtered solid was dried. The mixture was recrystallized and purified using dichloromethane and isopropanol to obtain the compound RD2 with high purity (4 g, 3.98 mmol). (yield: 46%)

Synthesis Example 15: Synthesis of Compound RD3 (Compound 371 in Formula 1-26)

Synthesis of Compound B-3

The compound A-3 (5-bromoquinoline, 50 g, 240.33 mmol), isobutylboronic acid (49 g, 480.65 mmol), Pd₂(dba)₃ (6.6 g, 3 mol%), Sphos (2-dicyclohexylphosphino-2′ ,6′ -dimethoxybiphenyl, 9.9 g, 24.03 mmol), potassium phosphate monohydrate (276.71 g, 1.2 mol) and toluene(1000 mL) were stirred at 120° C. for 12 hours. After completion of the reaction, the temperature was lowered, and the mixture was extracted with ethyl acetate. After the solvent was removed, the mixture was wet-purified using ethyl acetate and hexane to obtain the compound B-3 (35 g, 188.92 mmol). (yield: 79%)

Synthesis of Compound C-3

The compound B-3 (5-isobutylquinoline, 35 g, 188.92 mmol), 3-chloroperbenzoic acid (57 g, 283.38 mmol) and dichloromethane (500 mL) were stirred at room temperature for 3 hours. After completion of the reaction, sodium sulfite (80 g) was added into the mixture. The organic layer was extracted and the pressure was lowered so that the compound C-3 (27 g, 134.15 mmol) was obtained. (yield: 71%)

Synthesis of Compound D-3

The compound C-3 (25 g, 124.22 mmol) and toluene (500 mL) were added, and phosphoryl trichloride (38.1 g, 248.44 mmol) and diisopropylethylamine (32.1 g, 248.44 mmol) were added into the mixture. The mixture was stirred at the temperature of 120° C. for 4 hours. After completion of the reaction, the mixture was extracted with dichloromethane, and the pressure was lowered. The mixture was filtered using MgSO₄ under reduced pressure, and the organic solvent was removed. The mixture was wet-purified to obtain the compound D-3 (30 g, 91.0 mmol). (yield: 73%)

Synthesis of Compound E-3

The compound D-3 (10 g, 45.51 mmol), ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalene-1-carboxylate (16.33 g, 50.06 mmol), Pd(OAc)₂ (0.5 g, 2.28 mmol), PPh₃ (2.4 g, 9.10 mmol), K₂CO₃ (18.9 g, 136.53 mmol), 1,4-dioxane (100 mL) and water (100 mL) ) were stirred at 100° C. for 12 hours. After completion of the reaction, the mixture was extracted with ethyl acetate, and water in the organic layer was removed using MgSO₄. The solvent was removed from the mixture by lowering the pressure. The mixture was wet-purified using hexane and ethyl acetate to obtain the compound E-3 (13 g, 33.90 mmol) was obtained. (yield: 74%)

Synthesis of Compound F3

The compound E-3 (10 g, 26.07 mmol) and THF (100 mL) were added, and CH₃MgBr (15.5 g, 130.35 mmol) was slowly added at 0° C. After the reaction proceeded at room temperature for 12 hours, the mixture was worked-up using ethyl acetate and MgSO₄. The mixture was wet-purified using hexane and ethyl acetate to obtain the compound F-3 (6 g, 16.24 mmol). (yield: 62%)

Synthesis of Compound G3

The compound F-3 (20 g, 54.12 mmol) and a mixed aqueous solution of acetic acid and sulfuric acid (200 mL) were added and refluxed for 16 hours. After completion of the reaction, the reactant was slowly added to a cold aqueous sodium hydroxide (cool sodium hydroxide) solution. After work-up using dichloromethane and MgSO₄, and the mixture was recrystallized using toluene and ethanol to obtain the compound G-3 (10 g, 28.45 mmol) in a yellow solid state. (yield: 53%)

Synthesis of Compound H3

The compound G-3 (10 g, 28.45 mmol), 2-ethoxyethanol (200 mL) and distilled water (50 mL) were added, and nitrogen was bubbled for 1 hour. Then, IrCl₃·H₂O (4.5 g, 14.22 mmol) was added to the reaction vessel, and the mixture was refluxed for 2 days. After completion of the reaction, the temperature was slowly lowered to room temperature and the resulting solid was filtered. The solid was washed with hexane and methanol and dried to obtain the compound H-3 (6.0 g, 5.19 mmol). (yield: 18%)

Synthesis of Compound RD3

The compound H-3 (10 g, 8.64 mmol), 3,7-diethylnonane-4,6-dione (18.3 g, 86.4 mmol) and Na₂CO₃ (18.3 g, 172.8 mmol) was added and dissolved in 2-ethoxyethanol (100 mL). The mixture was slowly stirred for 24 hours. After completion of the reaction, the product was filtered using dichloromethane. After removing the solvent, the solid was filtered. The filtered solid was added to isopropanol, and the mixture was stirred. After stirring, the mixture was filtered, and the filtered solid was dried. The solid was recrystallized using dichloromethane and isopropanol and was purified to obtain the compound RD3 (4 g, 3.62 mmol) with high purity. (yield: 42%)

Synthesis Example 16: Synthesis of Compound RD4 (Compound 503 in Formula 1-27)

Synthesis of Compound B-4

The compound A-4 (10 g, 45.51 mmol), ethyl 8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalene-1-carboxylate (16.33 g, 50.06 mmol), Pd(OAc)₂ (0.5 g, 2.28 mmol), PPh₃ (2.4 g, 9.10 mmol), K₂CO₃ (18.9 g, 136.53 mmol), 1,4-dioxane (100 mL) and water (100 mL) were stirred at 100° C. for 12 hours. After completion of the reaction, the mixture was extracted with ethyl acetate, and water in the organic layer was removed using MgSO₄. The solvent was removed from the mixture by lowering the pressure. The mixture was wet-purified using hexane and ethyl acetate to obtain the compound B-4 (13 g, 33.90 mmol). (yield: 74%)

Synthesis of Compound C-4

The compound B-4 (10 g, 26.07 mmol) and THF (100 mL) were added, and CH₃MgBr (15.5 g, 130 mmol) was slowly added at 0° C. The reaction was proceeded for 12 hours, and the mixture was worked-up using ethyl acetate and MgSO₄. The mixture was wet-purified using hexane and ethyl acetate, and the compound C-4 (6 g, 16.24 mmol) was obtained. (yield: 62%)

Synthesis of Compound D-4

The compound C-4 (20 g, 54.12 mmol) was added to a mixed aqueous solution of acetic acid and sulfuric acid (200 mL), and the mixture was reflux for 16 hours. After completion of the reaction, a cold sodium hydroxide aqueous solution was slowly added into the mixture. The mixture was worked-up using dichloromethane and MgSO₄. The mixture was recrystallized using toluene and ethanol to obtain the compound D-4 (10 g, 28.45 mmol) in a yellow solid state. (yield: 53%)

Synthesis of Compound E-4

The compound D-4 (10 g, 28.45 mmol), 2-ethoxyethanol (200 mL) and distilled water (50 mL) were added, and nitrogen was injected to the mixture for 1 hour. IrCl₃·H₂O (4.5 g, 14.22 mmol) was put in the reaction vessel and refluxed for 2 days. After completion of the reaction, the temperature was slowly lowered to room temperature and the resulting solid was filtered. After washing the solid with methanol and drying the solid, the compound E-4 (6.0 g, 5.19 mmol) was obtained. (yield: 18%)

Synthesis of Compound RD4

The compound E-4 (10 g, 8.64 mmol), 3,7-diethylnonane-4,6-dione (18.3 g, 86.4 mmol) and Na₂CO₃ (18.3 g, 172.8 mmol) were added and dissolved in 2-ethoxyethanol (100 mL). The mixture was slowly stirred for 24 hours. After completion of the reaction, the product was filtered using dichloromethane. After removing the solvent, the solid was filtered. The filtered solid was added to isopropanol and stirred, and then the filtered solid was dried. The mixture was recrystallized and purified using dichloromethane and isopropanol to obtain the compound RD4 with high purity (4 g, 3.62 mmol). (yield: 42%)

Synthesis Example 17: Synthesis of Compound RD17 (Compound 610 in Formula 1-29)

The compound A-17 (10 g, 5.38 mmol), 3,7-diethyl-3,7-dimethylnonane-4,6-dione (12.94 g, 53.84 mmol) and Na₂CO₃ (11.4 g, 107.7 mmol) were added and dissolved in 2-ethoxyethanol (100 mL). The mixture was slowly stirred for 24 hours. After completion of the reaction, the product was filtered using dichloromethane. After removing the solvent, the solid was filtered. The filtered solid was added to isopropanol and stirred, and then the filtered solid was dried. The mixture was recrystallized using dichloromethane and isopropanol and purified to obtain the compound RD17 with high purity (3.8 g, 3.36 mmol). (yield: 42%)

Synthesis Example 18: Synthesis of Compound RD18 (Compound 611 in Formula 1-29)

Under the nitrogen condition, bromobenzene (1.01 g, 6.46 mmol) and 50 ml of THF were put in a reaction vessel, and the temperature was lowered to -78° C. n-BuLi (2.6 ml, 2.5 M in hexane) was slowly added into the mixture. After 30 minutes, while maintaining the temperature, N,N′-diisopropylcarbodiimide (0.82 g, 6.46 mmol) was slowly added, and the mixture was stirred for 30 minutes. The mixture was added to a reaction vessel, in which the compound A-18 (3 g, 1.62 mmol) was dissolved in 100 ml THF, and stirred at 80° C. for 8 hours. The temperature of the mixture was lowered to room temperature and volatile substances were removed. After the mixture was recrystallized using THF/pentane and dichloromethane/hexane, purification was performed to obtain the compound RD18 with high purity (2.3 g, 2.03 mmol).

Synthesis Example 19: Synthesis of Compound RD19 (Compound 612 in Formula 1-29)

Under the nitrogen condition, the compound A-19 (3 g, 1.62 mmol) and THT (100 ml) were added in a reaction vessel, and the compound F-1 (0.8 g, 3.56 mmol) dissolved in THF was slowly added. The mixture was stirred at room temperature for 8 hours. The mixture was extracted using toluene, the solvent was removed, and diethyl ether was added to obtain a solid. The obtained solid was purified to obtain the compound RD19 with high purity (1.1 g, 1.01 mmol).

Synthesis Example 20: Synthesis of Compound RD20 (Compound 613 in Formula 1-29)

Under the nitrogen condition, the compound A-20 (3 g, 1.62 mmol) and THT (100 ml) were added in a reaction vessel, and the compound F-2 (0.8 g, 3.56 mmol) dissolved in THF was slowly added. The mixture was stirred at room temperature for 8 hours. The mixture was extracted using toluene, the solvent was removed, and diethyl ether was added to obtain a solid. The obtained solid was purified to obtain the compound RD20 with high purity (0.9 g, 0.80 mmol).

Synthesis Example 21: Synthesis of Compound RD21 (Compound 614 in Formula 1-29)

The compound A-21 (10 g, 5.38 mmol), 3,7-diethyl-3,7-dimethylnonane-4,6-dione (12.94 g, 53.84 mmol) and Na₂CO₃ (11.4 g, 107.7 mmol) were added and dissolved in 2-ethoxyethanol (100 mL). The mixture was slowly stirred for 24 hours. After completion of the reaction, the product was filtered using dichloromethane. After removing the solvent, the solid was filtered. The filtered solid was added to isopropanol and stirred, and then the filtered solid was dried. The mixture was recrystallized using dichloromethane and isopropanol and purified to obtain the compound RD21 with high purity (3.4 g, 3.00 mmol).

Synthesis Example 22: Synthesis of Compound RD22 (Compound 615 in Formula 1-29)

Under the nitrogen condition, bromobenzene (1.01 g, 6.46 mmol) and 50 ml of THF were put in a reaction vessel, and the temperature was lowered to -78° C. n-BuLi (2.6 ml, 2.5 M in hexane) was slowly added into the mixture. After 30 minutes, while maintaining the temperature, N,N′-diisopropylcarbodiimide (0.82 g, 6.46 mmol) was slowly added, and the mixture was stirred for 30 minutes. The mixture was added to a reaction vessel, in which the compound A-22 (3 g, 1.62 mmol) was dissolved in 100 ml THF, and stirred at 80° C. for 8 hours. The temperature of the mixture was lowered to room temperature and volatile substances were removed. After the mixture was recrystallized using THF/pentane and dichloromethane/hexane, purification was performed to obtain the compound RD22 with high purity (2.0 g, 1.82 mmol).

Synthesis Example 23: Synthesis of Compound RD23 (Compound 616 in Formula 1-29)

Under the citrogen condition, the compound A-23 (3 g, 1.62 mmol) and THT (100 ml) were added in a reaction vessel, and the compound F-1 (0.8 g, 3.56 mmol) dissolved in THF was slowly added. The mixture was stirred at room temperature for 8 hours. The mixture was extracted using toluene, the solvet was removed, and diethyl ether was added to obtain a solid. The obtained solid was purified to obtain the compund RD23 with high purity (2.5 g, 2.29 mmol).

Synthesis Example 24: Synthesis of Compound RD24 (Compound 617 in Formula 1–29)

Under the nitrogen condition, the compound A-24 (3 g, 1.62 mmol) and THT (100 ml) were added in a reaction vessel, and the compound F-2 (0.8 g, 3.56 mmol) dissolved in THF was slowly added. The mixture was stirred at room temperature for 8 hours. The mixture was extracted using toluene, the solvent was removed, and diethyl ether was added to obtain a solid. The obtained solid was purified to obtain the compound RD24 with high purity (2.2 g, 1.95 mmol).

Synthesis Example 25: Synthesis of Compound RD25 (Compound 618 in Formula 1-29)

The compound A-25 (10 g, 5.38 mmol), 3,7-diethyl-3,7-dimethylnonane-4,6-dione (12.94 g, 53.84 mmol) and Na₂CO₃ (11.4 g, 107.7 mmol) were added and dissolved in 2-ethoxyethanol (100 mL). The mixture was slowly stirred for 24 hours. After completion of the reaction, the product was filtered using dichloromethane. After removing the solvent, the solid was filtered. The filtered solid was added to isopropanol and stirred, and then the filtered solid was dried. The mixture was recrystallized using dichloromethane and isopropanol and purified to obtain the compound RD25 with high purity (3.3 g, 2.91 mmol).

Synthesis Example 26: Synthesis of Compound RD26 (Compound 619 in Formula 1-29)

Under the nitrogen condition, bromobenzene (1.01 g, 6.46 mmol) and 50 ml of THF were put in a reaction vessel, and the temperature was lowered to -78° C. n-BuLi (2.6 ml, 2.5 M in hexane) was slowly added into the mixture. After 30 minutes, while maintaining the temperature, N,N′-diisopropylcarbodiimide (0.82 g, 6.46 mmol) was slowly added, and the mixture was stirred for 30 minutes. The mixture was added to a reaction vessel, in which the compound A-26 (3 g, 1.62 mmol) was dissolved in 100 ml THF, and stirred at 80° C. for 8 hours. The temperature of the mixture was lowered to room temperature and volatile substances were removed. After the mixture was recrystallized using THF/pentane and dichloromethane/hexane, purification was performed to obtain the compound RD26 with high purity (2.1 g, 1.92 mmol).

Synthesis Example 27: Synthesis of Compound RD27 (Compound 620 in Formula 1-29)

Under the nitrogen condition, the compound A-27 (3 g, 1.62 mmol) and THT (100 ml) were added in a reaction vessel, and the compound F-1 (0.8 g, 3.56 mmol) dissolved in THF was slowly added. The mixture was stirred at room temperature for 8 hours. The mixture was extracted using toluene, the solvent was removed, and diethyl ether was added to obtain a solid. The obtained solid was purified to obtain the compound RD27 with high purity (2.2 g, 2.02 mmol).

Synthesis Example 28: Synthesis of Compound RD28 (Compound 621 in Formula 1-29)

Under the nitrogen condition, the compound A-28 (3 g, 1.62 mmol) and THT (100 ml) were added in a reaction vessel, and the compound F-2 (0.8 g, 3.56 mmol) dissolved in THF was slowly added. The mixture was stirred at room temperature for 8 hours. The mixture was extracted using toluene, the solvent was removed, and diethyl ether was added to obtain a solid. The obtained solid was purified to obtain the compound RD28 with high purity (1.9 g, 1.68 mmol).

Synthesis Example 29: Synthesis of Compound RD29 (Compound 622 in Formula 1-29)

The compound A-29 (10 g, 5.38 mmol), 3,7-diethyl-3,7-dimethylnonane-4,6-dione (12.94 g, 53.84 mmol) and Na₂CO₃ (11.4 g, 107.7 mmol) were added and dissolved in 2-ethoxyethanol (100 mL). The mixture was slowly stirred for 24 hours. After completion of the reaction, the product was filtered using dichloromethane. After removing the solvent, the solid was filtered. The filtered solid was added to isopropanol and stirred, and then the filtered solid was dried. The mixture was recrystallized using dichloromethane and isopropanol and purified to obtain the compound RD29 with high purity (3.9 g, 3.44 mmol).

Synthesis Example 30: Synthesis of Compound RD30 (Compound 623 in Formula 1-29)

Under the nitrogen condition, bromobenzene (1.01 g, 6.46 mmol) and 50 ml of THF were put in a reaction vessel, and the temperature was lowered to -78° C. n-BuLi (2.6 ml, 2.5 M in hexane) was slowly added into the mixture. After 30 minutes, while maintaining the temperature, N,N′-diisopropylcarbodiimide (0.82 g, 6.46 mmol) was slowly added, and the mixture was stirred for 30 minutes. The mixture was added to a reaction vessel, in which the compound A-30 (3 g, 1.62 mmol) was dissolved in 100 ml THF, and stirred at 80° C. for 8 hours. The temperature of the mixture was lowered to room temperature and volatile substances were removed. After the mixture was recrystallized using THF/pentane and dichloromethane/hexane, purification was performed to obtain the compound RD30 with high purity (2.7 g, 2.46 mmol).

Synthesis Example 31: Synthesis of Compound RD31 (Compound 624 in Formula 1-29)

Under the nitrogen condition, the compound A-31 (3 g, 1.62 mmol) and THT (100 ml) were added in a reaction vessel, and the compound F-1 (0.8 g, 3.56 mmol) dissolved in THF was slowly added. The mixture was stirred at room temperature for 8 hours. The mixture was extracted using toluene, the solvent was removed, and diethyl ether was added to obtain a solid. The obtained solid was purified to obtain the compound RD31 with high purity (2.0 g, 1.84 mmol).

Synthesis Example 32: Synthesis of Compound RD32 (Compound 625 in Formula 1-29)

Under the nitrogen condition, the compound A-32 (3 g, 1.62 mmol) and THT (100 ml) were added in a reaction vessel, and the compound F-2 (0.8 g, 3.56 mmol) dissolved in THF was slowly added. The mixture was stirred at room temperature for 8 hours. The mixture was extracted using toluene, the solvent was removed, and diethyl ether was added to obtain a solid. The obtained solid was purified to obtain the compound RD32 with high purity (1.8 g, 1.59 mmol).

The second compound 234 has an excellent hole-dominant property (characteristic) and is represented by Formula 2-1.

wherein

• each of X and Y is independently selected from the group consisting of an unsubstituted or substituted C₆-C₃₀ aryl group and an unsubstituted or substituted C₃-C₃₀ heteroaryl group,
• R⁴ is selected from the group consisting of an unsubstituted or substituted C₁-C₂₀ alkyl group and an unsubstituted or substituted C₆-C₃₀ aryl group,
• a1 is an integer of 0 to 9,
• L¹ is selected from the group consisting of an unsubstituted or substituted C₆-C₃₀ arylene group and an unsubstituted or substituted C₃-C₃₀ heteroarylene group, and
• a2 is 0 or 1.

Each of X, Y and L1 can be partially or wholly deuterated.

X and Y can be same or different, and an aryl group and/or a heteroaryl group for X and Y can be substituted with at least one of deuterium, a C₆-C₃₀ aryl group and a C₃-C₃₀ heteroaryl group.

For example, each of X and Y can be independently selected from the group consisting of phenyl unsubstituted or substituted with at least one of deuterium, a C₆-C₃₀ aryl group and a C₃-C₃₀ heteroaryl group, biphenyl unsubstituted or substituted with at least one of deuterium, a C₆-C₃₀ aryl group and a C₃-C₃₀ heteroaryl group, naphthyl unsubstituted or substituted with at least one of deuterium, a C₆-C₃₀ aryl group and a C₃-C₃₀ heteroaryl group, fluorenyl unsubstituted or substituted with at least one of a C₁-C₂₀ alkyl group and a C₃-C₃₀ aryl group, e.g., 9,9-dimethyl-9H-fluorenyl or 9,9-diphenyl-9H-fluorenyl, phenanthrenyl, dibenzofuranyl and dibenzothiophenyl. R¹ can be hydrogen or phenyl, and L¹ can be selected from the group consisting of phenylene unsubstituted or substituted with deuterium, naphthalene unsubstituted or substituted with deuterium and biphenylene unsubstituted or substituted with deuterium.

In Formula 2-1, a linking position (a linking site) of R⁴ can be specified. Namely, Formula 2-1 can be represented by Formula 2-2.

In Formula 2-2, each of X and Y is independently selected from the group consisting of an unsubstituted or substituted C₆-C₃₀ aryl group and an unsubstituted or substituted C₃-C₃₀ heteroaryl group, R⁴ is selected from the group consisting of an unsubstituted or substituted C₁-C₂₀ alkyl group and an unsubstituted or substituted C₆-C₃₀ aryl group, L¹ is selected from the group consisting of an unsubstituted or substituted C₆-C₃₀ arylene group and an unsubstituted or substituted C₃-C₃₀ heteroarylene group, and a2 is 0 or 1.

In Formula 2-1, X can include at least two aromatic rings, and optionally two aromatic rings can be fused. Namely, Formula 2-1 can be represented by Formula 2-3.

wherein

• Y is selected from the group consisting of phenyl unsubstituted or substituted with at least one
• of a C₆-C₃₀ aryl group and a C₃-C₃₀ heteroaryl group, biphenyl unsubstituted or substituted with at least one of a C₆-C₃₀ aryl group and a C₃-C₃₀ heteroaryl group and naphthyl unsubstituted or substituted with at least one of a C₆-C₃₀ aryl group and a C₃-C₃₀ heteroaryl group,
• R⁴ is selected from the group consisting of an unsubstituted or substituted C₁-C₂₀ alkyl group and an unsubstituted or substituted C₆-C₃₀ aryl group, a1 is an integer of 0 to 9,
• each of R⁵ and R⁶ is independently selected from the group consisting of hydrogen and an unsubstituted or substituted C₆-C₃₀ aryl group, and optionally R⁵ and R⁶ form a hetero ring,
• L¹ is selected from the group consisting of an unsubstituted or substituted C₆-C₃₀ arylene group and an unsubstituted or substituted C₃-C₃₀ heteroarylene group, and
• a2 is 0 or 1.

For example, L1 can be phenylene or biphenylene, and a can be 1. R⁵ and R⁶ can form a hetero ring containing an oxygen atom (O).

For example, the second compound 234 can be one of the compounds in Formula 2-4.

The third compound 236 has an excellent electron-dominant property (characteristic) and is represented by Formula 3-1.

wherein

• X is NR⁸, O or S,
• R⁸ is selected from the group consisting of an unsubstituted or substituted C₁-C₁₀ alkyl group, an unsubstituted or substituted C₆-C₃₀ aryl group and an unsubstituted or substituted C₃-C₃₀ heteroaryl group,
• R⁷ is selected from the group consisting of an unsubstituted or substituted C₆-C₃₀ aryl group and an unsubstituted or substituted C₃-C₃₀ heteroaryl group,
• L² is selected from the group consisting of an unsubstituted or substituted C₆-C₃₀ arylene group and an unsubstituted or substituted C₃-C₃₀ heteroarylene group, and
• b is 0 or 1.

For example, R⁷ and R⁸ can be independently selected from an unsubstituted or substituted C₆-C₃₀ aryl group, and L2 can be selected from an unsubstituted or substituted C₆-C₃₀ arylene group.

In an exemplary embodiment, R⁷ can be selected from phenyl, biphenyl and naphthyl, R⁸ can be selected from phenyl, naphthyl, biphenyl and 9,9-dimethylfluorenyl, and L² can be phenylene.

In Formula 3-1, b can be 0 so that Formula 3-1 can be represented by Formula 3-2.

In Formula 3-1, a linking position (a linking site) of L² as a linker or a fused ring containing X to a benzocarbazole moiety (or a naphtho benzofuran) can be specified. Namely, Formula 3-1 can be represented by Formula 3-3.

In Formula 3-3, b can be 0 so that Formula 3-3 can be represented by Formula 3-4.

In Formula 3-1, a linking position of L² or a benzocarbazole moiety to a fused ring containing X can be specified. Namely, Formula 3-1 can be represented by Formula 3-5.

In Formula 3-5, b can be 0 so that Formula 3-5 can be represented by Formula 3-6.

For example, the third compound 236 can be one of the compounds in Formula 3-7.

The HIL 210 is positioned between the first electrode 160 and the HTL 220. The HIL 210 can include at least one compound selected from the group consisting of 4,4′,4″-tris(3-methylphenylamino)triphenylamine (MTDATA), 4,4′,4″-tris(N,N-diphenyl-amino)triphenylamine (NATA), 4,4′,4″-tris(N-(naphthalene-1-yl)-N-phenyl-amino)triphenylamine (1T-NATA), 4,4′,4″-tris(N-(naphthalene-2-yl)-N-phenyl-amino)triphenylamine (2T-NATA), copper phthalocyanine(CuPc), tris(4-carbazoyl-9-yl-phenyl)amine (TCTA), N,N′-diphenyl-N,N′-bis(1-naphthyl)-1,1′-biphenyl-4,4″-diamine (NPB or NPD), 1,4,5,8,9,11-hexaazatriphenylenehexacarbonitrile(dipyrazino[2,3-f:2′3′-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile (HAT-CN), 1,3,5-tris[4-(diphenylamino)phenyl]benzene (TDAPB), poly(3,4-ethylenedioxythiphene)polystyrene sulfonate (PEDOT/PSS), and N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluoren-2-amine, but it is not limited thereto. The HIL 210 can have a thickness of 10 to 200 Å, preferably 50 to 150 Å.

The HTL 220 is positioned between the HIL 210 and the red EML 230. The HTL 220 can include at least one compound selected from the group consisting of N,N′-diphenyl-N,N′-bis(3-methylphenyl)-1,1′-biphenyl-4,4′-diamine (TPD), NPB (or NPD), 4,4′-bis(N-carbazolyl)-1,1′-biphenyl (CBP), poly[N,N′-bis(4-butylphenyl)-N,N′-bis(phenyl)-benzidine] (poly-TPD), (poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4′-(N-(4-sec-butylphenyl)diphenylamine))] (TFB), di-[4-(N,N-di-p-tolyl-amino)-phenyl]cyclohexane (TAPC), 3,5-di(9H-carbazol-9-yl)-N,N-diphenylaniline (DCDPA), N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluoren-2-amine, N-(biphenyl-4-yl)-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)biphenyl-4-amine, and a compound in Formula 4, but it is not limited thereto. The HTL 220 can have a thickness of 500 to 900 Å, preferably 600 to 800 Å.

The ETL 240 is positioned between the red EML 230 and the second electrode 164 and includes at least one of an oxadiazole-containing compound, a triazole-containing compound, a phenanthroline-containing compound, a benzoxazole-containing compound, a benzothiazole-containing compound, a benzimidazole-containing compound, and a triazine-containing compound. For example, the ETL 240 can include at least one compound selected from the group consisting of tris-(8-hydroxyquinoline aluminum (Alq₃), 2-biphenyl-4-yl-5-(4-t-butylphenyl)-1,3,4-oxadiazole (PBD), spiro-PBD, lithium quinolate (Liq), 1,3,5-tris(N-phenylbenzimidazol-2-yl)benzene (TPBi), bis(2-methyl-8-quinolinolato-N1,O8)-(1,1′-biphenyl-4-olato)aluminum (BAlq), 4,7-diphenyl-1,10-phenanthroline (Bphen), 2,9-bis(naphthalene-2-yl)-4,7-diphenyl-1, 10-phenanthroline (NBphen), 2,9-dimethyl-4,7-diphenyl-1, 10-phenathroline (BCP), 3-(4-biphenyl)-4-phenyl-5-tert-butylphenyl-1,2,4-triazole (TAZ), 4-(naphthalen-1-yl)-3,5-diphenyl-4H-1,2,4-triazole (NTAZ), 1,3,5-tri(p-pyrid-3-yl-phenyl)benzene (TpPyPB), 2,4,6-tris(3′-(pyridin-3-yl)biphenyl-3-yl) 1,3,5-triazine (TmPPPyTz), Poly [9,9-bis(3′-((N,N-dimethyl)-N-ethylammonium)-propyl)-2,7-fluorene]-alt-2,7-(9,9-dioctylfluorene)] (PFNBr), tris(phenylquinoxaline) (TPQ), and diphenyl-4-triphenylsilyl-phenylphosphine oxide (TSPO1), but it is not limited thereto. The ETL 240 can have a thickness of 100 to 500 Å, preferably 200 to 400 Å.

The EIL 250 is positioned between the ETL 240 and the second electrode 164. The EIL 250 at least one of an alkali halide compound, such as LiF, CsF, NaF, or BaF₂, and an organo-metallic compound, such as Liq, lithium benzoate, or sodium stearate, but it is not limited thereto. The EIL 250 can have a thickness of 1 to 20 Å, preferably 5 to 15 Å.

The EBL, which is positioned between the HTL 220 and the red EML 230 to block the electron transfer from the red EML 230 to the HTL 220, can include at least one compound selected from the group consisting of TCTA, tris[4-(diethylamino)phenyl]amine, N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluoren-2-amine, TAPC, MTDATA, 1,3-bis(carbazol-9-yl)benzene (mCP), 3,3′-bis(N-carbazolyl)-1,1′-biphenyl (mCBP), CuPc, N,N′-bis[4-[bis(3-methylphenyl)amino]phenyl]-N,N′-diphenyl-[1,1′-biphenyl]-4,4′-diamine (DNTPD), TDAPB, DCDPA, and 2,8-bis(9-phenyl-9H-carbazol-3-yl)dibenzo[b,d]thiophene), but it is not limited thereto.

The HBL, which is positioned between the ETL 240 and the red EML 230 to block the hole transfer from the red EML 230 to the ETL 240, can include the above material of the ETL 240. For example, the material of the HBL has a HOMO energy level being lower than a material of the red EML 230 and can be at least one compound selected from the group consisting of BCP, BAlq, Alq3, PBD, spiro-PBD, Liq, bis-4,6-(3,5-di-3-pyridylphenyl)-2-methylpyrimidine (B3PYMPM), bis[2-(diphenylphosphino)phenyl]ether oxide (DPEPO), 9-(6-9H-carbazol-9-yl)pyridine-3-yl)-9H-3,9′-bicarbazole, and TSPO1, but it is not limited thereto.

As illustrated above, the OLED D1 is positioned in the red pixel region, and the red EML 230 of the OLED D1 includes the first compound 232, which is represented by Formula 1-1, being a dopant, the second compound 234, which is represented by Formula 2-1, being a first host or a p-type host and the third compound 236, which is represented by Formula 3-1, being a second host or an n-type host. As a result, in the OLED D1, the driving voltage is decreased, and the luminous efficiency and the luminous lifespan is increased.

FIG. 4 is a cross-sectional view illustrating an OLED according to a third embodiment of the present disclosure.

As shown in FIG. 4, the OLED D2 includes first and second electrodes 160 and 164 facing each other and the organic emitting layer 162 therebetween. The organic emitting layer 162 includes a first emitting part 710 including a first red EML 720 and a second emitting part 730 including a second red EML 740. In addition, the organic emitting layer 162 can further include a charge generation layer (CGL) 750 between the first and second emitting parts 710 and 730.

For example, the first electrode 160 can include a transparent conductive material, e.g., ITO or IZO, and the second electrode 164 can include one of Al, Mg, Ag, AlMg and MgAg.

The CGL 750 is positioned between the first and second emitting parts 710 and 730 so that the first emitting part 710, the CGL 750 and the second emitting part 730 are sequentially stacked on the first electrode 160. Namely, the first emitting part 710 is positioned between the first electrode 160 and the CGL 750, and the second emitting part 730 is positioned between the second electrode 164 and the CGL 750.

As illustrated below, the first emitting part 710 includes the first red EML 720. The first red EML 720 includes a first compound 722 as a red dopant (e.g., a red emitter), a second compound 724 as a p-type host (e.g., a first host) and a third compound 726 as an n-type host (e.g., a second host). In the first red EML 720, the first compound 722 is represented by Formula 1-1, the second compound 724 is represented by Formula 2-1, and the third compound 726 is represented by Formula 3-1.

The first red EML 720 can have a thickness of 100 to 400 Å, e.g., 200 to 400 Å, but it is not limited thereto.

In the first red EML 720, each of the second and third compounds 724 and 726 can have a weight % being greater than the first compound 722. For example, in the first red EML 720, the first compound 722 can have a weight % of 1 to 20, e.g., 5 to 15.

In addition, in the first red EML 720, a ratio of the weight % between the second compound 724 and the third compound 726 can be 1:3 to 3:1. For example, in the first red EML 720, the second and third compounds 724 and 726 can have the same weight %.

The first emitting part 710 can further include at least one of a first HTL 714 under the first red EML 720 and a first ETL 716 on or over the first red EML 720. Namely, the first HTL 714 is disposed between the first red EML 720 and the first electrode 160, and the first ETL 716 is disposed between the first red EML 720 and the CGL 750.

In addition, the first emitting part 710 can further include an HIL 712 between the first electrode 160 and the first HTL 714.

As illustrated below, the second emitting part 730 includes the second red EML 740. The second red EML 740 includes a first compound 742, e.g., a fourth compound, as a red dopant (e.g., a red emitter), a second compound 744, e.g., a fifth compound, as a p-type host (e.g., a first host) and a third compound 726, e.g., a sixth compound, as an n-type host (e.g., a second host). In the second red EML 740, the first compound 742 is represented by Formula 1-1, the second compound 744 is represented by Formula 2-1, and the third compound 746 is represented by Formula 3-1.

The second red EML 740 can have a thickness of 100 to 400 Å, e.g., 200 to 400 Å, but it is not limited thereto.

In the second red EML 740, each of the second and third compounds 744 and 746 can have a weight % being greater than the first compound 742. For example, in the second red EML 740, the first compound 742 can have a weight % of 1 to 20, e.g., 5 to 15.

In addition, in the second red EML 740, a ratio of the weight % between the second compound 744 and the third compound 746 can be 1:3 to 3:1. For example, in the second red EML 740, the second and third compounds 744 and 746 can have the same weight %.

The first compound 742 in the second red EML 740 and the first compound 722 in the first red EML 720 can be same or different. The second compound 744 in the second red EML 740 and the second compound 724 in the first red EML 720 can be same or different. The third compound 746 in the second red EML 740 and the third compound 726 in the first red EML 720 can be same or different.

The second emitting part 730 can further include at least one of a second HTL 732 under the second red EML 740 and a second ETL 734 on or over the second red EML 740. Namely, the second HTL 732 is disposed between the second red EML 740 and the CGL 750, and the second ETL 734 is disposed between the second red EML 740 and the second electrode 164.

In addition, the second emitting part 730 can further include an EIL 736 between the second ETL 734 and the second electrode 164.

The CGL 750 is positioned between the first and second emitting parts 710 and 730. Namely, the first and second emitting parts 710 and 730 are connected to each other through the CGL 750. The CGL 750 can be a P-N junction type CGL of an N-type CGL 752 and a P-type CGL 754.

The N-type CGL 752 is positioned between the first ETL 716 and the second HTL 732, and the P-type CGL 754 is positioned between the N-type CGL 752 and the second HTL 732.

In the OLED D2, at least one of the first and second red EMLs 720 and 740 includes a first compound, e.g., a red dopant, represented by Formula 1-1, a second compound, e.g., a p-type host, represented by Formula 2-1 and a third compound, e.g., an n-type host, represented by Formula 3-1. As a result, the OLED D2 has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

FIG. 5 is a cross-sectional view illustrating an organic light emitting display device according to a fourth embodiment of the present disclosure.

As shown in FIG. 5, the organic light emitting display device 300 includes a first substrate 310, where a red pixel region RP, a green pixel region GP and a blue pixel region BP are defined, a second substrate 370 facing the first substrate 310, an OLED D, which is positioned between the first and second substrates 310 and 370 and providing white emission, and a color filter layer 380 between the OLED D and the second substrate 370.

Each of the first and second substrates 310 and 370 can be a glass substrate or a flexible substrate. For example, each of the first and second substrates 310 and 370 can be a polyimide (PI) substrate, a polyethersulfone (PES) substrate, a polyethylenenaphthalate (PEN) substrate, a polyethylene terephthalate (PET) substrate or a polycarbonate (PC) substrate.

A buffer layer 320 is formed on the substrate, and the TFT Tr corresponding to each of the red, green and blue pixel regions RP, GP and BP is formed on the buffer layer 320. The buffer layer 320 can be omitted.

A semiconductor layer 322 is formed on the buffer layer 320. The semiconductor layer 322 can include an oxide semiconductor material or polycrystalline silicon.

A gate insulating layer 324 is formed on the semiconductor layer 322. The gate insulating layer 324 can be formed of an inorganic insulating material such as silicon oxide or silicon nitride.

A gate electrode 330, which is formed of a conductive material, e.g., metal, is formed on the gate insulating layer 324 to correspond to a center of the semiconductor layer 322.

An interlayer insulating layer 332, which is formed of an insulating material, is formed on the gate electrode 330. The interlayer insulating layer 332 can be formed of an inorganic insulating material, e.g., silicon oxide or silicon nitride, or an organic insulating material, e.g., benzocyclobutene or photo-acryl.

The interlayer insulating layer 332 includes first and second contact holes 334 and 336 exposing both sides of the semiconductor layer 322. The first and second contact holes 334 and 336 are positioned at both sides of the gate electrode 330 to be spaced apart from the gate electrode 330.

A source electrode 340 and a drain electrode 342, which are formed of a conductive material, e.g., metal, are formed on the interlayer insulating layer 332.

The source electrode 340 and the drain electrode 342 are spaced apart from each other with respect to the gate electrode 330 and respectively contact both sides of the semiconductor layer 322 through the first and second contact holes 334 and 336.

The semiconductor layer 322, the gate electrode 330, the source electrode 340 and the drain electrode 342 constitute the TFT Tr. The TFT Tr serves as a driving element. Namely, the TFT Tr can correspond to the driving TFT Td (of FIG. 1).

The gate line and the data line cross each other to define the pixel, and the switching TFT is formed to be connected to the gate and data lines. The switching TFT is connected to the TFT Tr as the driving element.

In addition, the power line, which can be formed to be parallel to and spaced apart from one of the gate and data lines, and the storage capacitor for maintaining the voltage of the gate electrode of the TFT Tr in one frame can be further formed.

A planarization layer 350, which includes a drain contact hole 352 exposing the drain electrode 342 of the TFT Tr, is formed to cover the TFT Tr.

A first electrode 360, which is connected to the drain electrode 342 of the TFT Tr through the drain contact hole 352, is separately formed in each pixel region and on the planarization layer 350. The first electrode 360 can be an anode and can be formed of a conductive material, e.g., a transparent conductive oxide (TCO), having a relatively high work function. The first electrode 360 can further include a reflection electrode or a reflection layer. For example, the reflection electrode or the reflective layer can include Ag or aluminum-palladium-copper (APC). In a top-emission type organic light emitting display device 300, the first electrode 360 can have a structure of ITO/Ag/ITO or ITO/APC/ITO.

A bank layer 366 is formed on the planarization layer 350 to cover an edge of the first electrode 360. Namely, the bank layer 366 is positioned at a boundary of the pixel and exposes a center of the first electrode 360 in the pixel. Since the OLED D emits the white light in the red, green and blue pixel regions RP, GP and BP, the organic emitting layer 362 can be formed as a common layer in the red, green and blue pixel regions RP, GP and BP without separation. The bank layer 366 can be formed to prevent a current leakage at an edge of the first electrode 360 and can be omitted.

An organic emitting layer 362 is formed on the first electrode 360. As illustrated below, the organic emitting layer 362 includes at least two emitting parts, and each emitting part includes at least one EML. As a result, the OLED D emits the white light.

At least one of the emitting parts includes a first compound, e.g., a red dopant, represented by Formula 1-1, a second compound, e.g., a p-type host or a first host, represented by Formula 2-1 and a third compound, e.g., an n-type host or a second host, represented by Formula 3-1 to emit the red light.

A second electrode 364 is formed over the substrate 310 where the organic emitting layer 362 is formed.

In the organic light emitting display device 300, since the light emitted from the organic emitting layer 362 is incident to the color filter layer 380 through the second electrode 364, the second electrode 364 has a thin profile for transmitting the light.

The first electrode 360, the organic emitting layer 362 and the second electrode 364 constitute the OLED D.

The color filter layer 380 is positioned over the OLED D and includes a red color filter 382, a green color filter 384 and a blue color filter 386 respectively corresponding to the red, green and blue pixel regions RP, GP and BP. The red color filter 382 can include at least one of red dye and red pigment, the green color filter 384 can include at least one of green dye and green pigment, and the blue color filter 386 can include at least one of blue dye and blue pigment.

The color filter layer 380 can be attached to the OLED D by using an adhesive layer. Alternatively, the color filter layer 380 can be formed directly on the OLED D.

An encapsulation film can be formed to prevent penetration of moisture into the OLED D. For example, the encapsulation film can include a first inorganic insulating layer, an organic insulating layer and a second inorganic insulating layer sequentially stacked, but it is not limited thereto. The encapsulation film can be omitted.

A polarization plate for reducing an ambient light reflection can be disposed over the top-emission type OLED D. For example, the polarization plate can be a circular polarization plate.

In the OLED of FIG. 5, the first and second electrodes 360 and 364 are a reflection electrode and a transparent (or semi-transparent) electrode, respectively, and the color filter layer 380 is disposed over the OLED D. Alternatively, when the first and second electrodes 360 and 364 are a transparent (or semi-transparent) electrode and a reflection electrode, respectively, the color filter layer 380 can be disposed between the OLED D and the first substrate 310.

A color conversion layer can be formed between the OLED D and the color filter layer 380. The color conversion layer can include a red color conversion layer, a green color conversion layer and a blue color conversion layer respectively corresponding to the red, green and blue pixel regions RP, GP and BP. The white light from the OLED D is converted into the red light, the green light and the blue light by the red, green and blue color conversion layer, respectively. For example, the color conversion layer can include a quantum dot. Accordingly, the color purity of the organic light emitting display device 300 can be further improved.

The color conversion layer can be included instead of the color filter layer 380.

As described above, in the organic light emitting display device 300, the OLED D in the red, green and blue pixel regions RP, GP and BP emits the white light, and the white light from the organic light emitting diode D passes through the red color filter 382, the green color filter 384 and the blue color filter 386. As a result, the red light, the green light and the blue light are provided from the red pixel region RP, the green pixel region GP and the blue pixel region BP, respectively.

In FIG. 5, the OLED D emitting the white light is used for a display device. Alternatively, the OLED D can be formed on an entire surface of a substrate without at least one of the driving element and the color filter layer to be used for a lightening device. The display device and the lightening device each including the OLED D of the present disclosure can be referred to as an organic light emitting device.

FIG. 6 is a cross-sectional view illustrating an OLED according to a fifth embodiment of the present disclosure.

As shown in FIG. 6, in the OLED D3, the organic emitting layer 362 includes a first emitting part 430 including a red EML 410, a second emitting part 440 including a first blue EML 450 and a third emitting part 460 including a third blue EML 470. In addition, the organic emitting layer 362 can further include a first CGL 480 between the first and second emitting parts 430 and 440 and a second CGL 490 between the first and third emitting part 430 and 460. In addition, the first emitting part 430 can further include a green EML 420.

The first electrode 360 is an anode, and the second electrode 364 is a cathode. One of the first and second electrodes 360 and 364 can be a transparent (semitransparent) electrode, and the other one of the first and second electrodes 360 and 364 can be a reflective electrode.

The second emitting part 440 is positioned between the first electrode 360 and the first emitting part 430, and the third emitting part 460 is positioned between the first emitting part 430 and the second electrode 364. In addition, the second emitting part 440 is positioned between the first electrode 360 and the first CGL 480, and the third emitting part 460 is positioned between the second CGL 490 and the second electrode 364. Namely, the second emitting part 440, the first CGL 480, the first emitting part 430, the second CGL 460 and the third emitting part 460 are sequentially stacked on the first electrode 360.

In the first emitting part 430, the green EML 420 is positioned on the red EML 410.

The first emitting part 430 can further include at least one of a first HTL 432 under the red EML 410 and a first ETL 434 over the red EML 410. When the first emitting part 430 includes the green EML 420, the first ETL 434 is positioned on the green EML 420.

The second emitting part 440 can further include at least one of a second HTL 444 under the first blue EML 450 and a second ETL 448 on the first blue EML 450. In addition, the second emitting part 440 can further include an HIL 442 between the first electrode 360 and the first HTL 444.

The second emitting part 440 can further include at least one of a first EBL between the second HTL 444 and the first blue EML 450 and a first HBL between the first blue EML 450 and the second ETL 448.

The third emitting part 460 can further include at least one of a third HTL 462 under the second blue EML 470 and a third ETL 466 on the second blue EML 470. In addition, the third emitting part 460 can further include an EIL 468 between the second electrode 364 and the third ETL 466.

The third emitting part 460 can further include at least one of a first EBL between the third HTL 462 and the second blue EML 470 and a first HBL between the second blue EML 470 and the third ETL 466.

For example, the HIL 442 can include at least one of MTDATA, NATA, 4,4′,4″-tris(N-(naphthalene-1-yl)-N-phenyl-amino)triphenylamine 1T-NATA, 2T-NATA, CuPc, TCTA, NPB, HAT-CN, TDAPB, PEDOT/PSS and N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluoren-2-amine.

Each of the first to third HTLs 432, 444 and 464 can include at least one of TPD, NPB, CBP, poly-TPD, TFB, TAPC, DCDPA, N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluoren-2-amine, N-(biphenyl-4-yl)-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)biphenyl-4-amine, and the compound in Formula 4.

Each of the first to third ETLs 434, 448 and 466 can include at least one of Alq3, PBD, spiro-PBD, Liq, TPBi, BAlq, Bphen, NBphen, BCP, TAZ, NTAZ, TpPyPB, TmPPPyTz, PFNBr, TPQ, and TSPO1.

The EIL 468 can include at least one of an alkali halide compound, such as LiF, CsF, NaF, or BaF₂, and an organo-metallic compound, such as Liq, lithium benzoate, or sodium stearate.

The first CGL 480 is positioned between the first and second emitting parts 430 and 440, and the second CGL 490 is positioned between the first and third emitting parts 430 and 460. Namely, the first and second emitting parts 430 and 440 is connected to each other by the first CGL 480, and the first and third emitting parts 430 and 460 is connected to each other by the second CGL 490. The first CGL 480 can be a P-N junction type CGL of an N-type CGL 482 and a P-type CGL 484, and the second CGL 490 can be a P-N junction type CGL of an N-type CGL 492 and a P-type CGL 494.

In the first CGL 480, the N-type CGL 482 is positioned between the first HTL 432 and the second ETL 448, and the P-type CGL 484 is positioned between the N-type CGL 482 and the first HTL 432.

In the second CGL 490, the N-type CGL 492 is positioned between the first ETL 434 and the third HTL 462, and the P-type CGL 494 is positioned between the N-type CGL 492 and the third HTL 462.

Each of the N-type CGL 482 of the first CGL 480 and the N-type CGL 492 of the second CGL 490 can be an organic layer doped with an alkali metal, e.g., Li, Na, K or Cs, and/or an alkali earth metal, e.g., Mg, Sr, Ba or Ra. For example, each of the N-type CGL 482 of the first CGL 480 and the N-type CGL 492 of the second CGL 490 can include an organic material, e.g., 4,7-dipheny-1,10-phenanthroline (Bphen) or MTDATA, as a host, and the alkali metal and/or the alkali earth metal as a dopant can be doped with a weight % of about 0.01 to 30.

Each of the P-type CGL 484 of the first CGL 480 and the P-type CGL 494 of the second CGL 490 can include at least one of an inorganic material, which is selected from the group consisting of tungsten oxide (WOx), molybdenum oxide (MoOx), beryllium oxide (Be2O3), vanadium oxide (V2O5) and their combination, and an organic material, which is selected from the group consisting of NPD, HAT-CN, F4TCNQ, TPD, N,N,N′,N′-tetranaphthyl-benzidine (TNB), TCTA, N,N′-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8) and their combination.

The red EML 410 includes a first compound 412 as a red dopant (e.g., a red emitter), a second compound 414 as a p-type host (e.g., a first host) and a third compound 416 as an n-type host (e.g., a second host). In the red EML 410, the first compound 412 is represented by Formula 1-1, the second compound 414 is represented by Formula 2-1, and the third compound 416 is represented by Formula 3-1.

In the red EML 410, each of the second and third compounds 414 and 416 can have a weight % being greater than the first compound 412. For example, in the red EML 410, the first compound 412 can have a weight % of 1 to 20, e.g., 5 to 15.

In addition, in the red EML 410, a ratio of the weight % between the second compound 414 and the third compound 416 can be 1:3 to 3:1. For example, in the red EML 410, the second and third compounds 414 and 416 can have the same weight %.

In the first emitting part 410, the green EML 420 includes a green host and a green dopant. The green dopant can be one of a phosphorescent compound, a fluorescent compound and a delayed fluorescent compound. For example, in the green EML 420, the host can be 4,4′-bis(carbazol-9-yl)biphenyl (CBP), and the green dopant can be fac tris(2-phenylpyridine)iridium Ir(ppy)3 or tris(8-hydroxyquinolino)aluminum (Alq3).

The first blue EML 450 in the second emitting part 440 includes a first blue host and a first blue dopant, and the second blue EML 470 in the third emitting part 460 includes a second blue host and a second blue dopant.

For example, each of the first and second blue hosts can be independently selected from the group consisting of mCP, 9-(3-(9H-carbazol-9-yl)phenyl)-9H-carbazole-3-carbonitrile (mCP-CN), mCBP, CBP-CN, 9-(3-(9H-Carbazol-9-yl)phenyl)-3-(diphenylphosphoryl)-9H-carbazole (mCPPO1) 3,5-Di(9H-carbazol-9-yl)biphenyl (Ph-mCP), TSPO1, 9-(3′-(9H-carbazol-9-yl)-[1,1′-biphenyl]-3-yl)-9H-pyrido[2,3-b]indole (CzBPCb), bis(2-methylphenyl)diphenylsilane (UGH-1), 1,4-bis(triphenylsilyl)benzene (UGH-2), 1,3-bis(triphenylsilyl)benzene (UGH-3), 9,9-spiorobifluoren-2-yl-diphenylphosphine oxide (SPPO1) and 9,9′-(5-(triphenylsilyl)-1,3-phenylene)bis(9H-carbazole) (SimCP).

For example, each of the first and second blue dopants can be independently selected from the group consisting of perylene, 4,4′-bis[4-(di-p-tolylamino)styryl]biphenyl (DPAVBi), 4-(di-p-tolylamino)-4-4′-[(di-p-tolylamino)styryl]stilbene (DPAVB), 4,4′-bis[4-(diphenylamino)styryl]biphenyl (BDAVBi), 2,7-bis(4-diphenylamino)styryl)-9,9-spiorfluorene (spiro-DPVBi), [1,4-bis[2-[4-[N,N-di(p-tolyl)amino]phenyl]vinyl] benzene (DSB), 1-4-di-[4-(N,N-diphenyl)amino]styryl-benzene (DSA), 2,5,8,11-tetra-tetr-butylperylene (TBPe), bis(2-hydroxylphenyl)-pyridine)beryllium (Bepp2), 9-(9-Phenylcarbazole-3-yl)-10-(naphthalene-1-yl)anthracene (PCAN), mer-tris(1-phenyl-3-methylimidazolin-2-ylidene-C,C(2)′iridium(III) (mer-Ir(pmi)3), fac-Tris(1,3-diphenyl-benzimidazolin-2-ylidene-C,C(2)′iridium(III) (fac-Ir(dpbic)3), bis(3,4,5-trifluoro-2-(2-pyridyl)phenyl-(2-carboxypyridyl)iridium(III) (Ir(tfpd)2pic), tris(2-(4,6-difluorophenyl)pyridine))iridium(III) (Ir(Fppy)3) and bis[2-(4,6-difluorophenyl)pyridinato-C2,N](picolinato)iridium(III) (FIrpic).

In an exemplary aspect, each of the first and second blue EMLs 450 and 470 can include an anthracene derivative as a blue host and a boron derivative as a blue dopant.

As illustrated above, the OLED D3 of the present disclosure includes the first emitting part 430 including the red EML 410 and the green EML 420, the second emitting part 440 including the first blue EML 450 and the third emitting part 460 including the second blue EML 470. As a result, the OLED D3 emits the white light.

In addition, the red EML 410 includes the first compound 412, which is represented by Formula 1-1, as a red dopant, the second compound 414, which is represented by Formula 2-1, as a first host or a p-type host, and the third compound 416, which is represented by Formula 3-1, as a second host or an n-type host. As a result, the OLED D3 has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

FIG. 7 is a cross-sectional view illustrating an OLED according to a sixth embodiment of the present disclosure.

As shown in FIG. 7, in the OLED D4, the organic emitting layer 362 includes a first emitting part 530 including a red EML 510 and green EML 520 and a yellow-green EML 525, a second emitting part 540 including a first blue EML 550 and a third emitting part 560 including a third blue EML 570. In addition, the organic emitting layer 362 can further include a first CGL 580 between the first and second emitting parts 530 and 540 and a second CGL 590 between the first and third emitting part 530 and 560.

The first electrode 360 is an anode, and the second electrode 364 is a cathode. One of the first and second electrodes 360 and 364 can be a transparent (semitransparent) electrode, and the other one of the first and second electrodes 360 and 364 can be a reflective electrode.

The second emitting part 540 is positioned between the first electrode 360 and the first emitting part 530, and the third emitting part 560 is positioned between the first emitting part 530 and the second electrode 364. In addition, the second emitting part 540 is positioned between the first electrode 360 and the first CGL 580, and the third emitting part 560 is positioned between the second CGL 590 and the second electrode 364. Namely, the second emitting part 540, the first CGL 580, the first emitting part 530, the second CGL 560 and the third emitting part 560 are sequentially stacked on the first electrode 360.

In the first emitting part 530, the yellow-green EML 525 is positioned between the red EML 510 and the green EML 520. Namely, the red EML 510, the yellow-green EML 525 and the green EML 520 are sequentially stacked so that the first emitting part 530 includes an EML having a triple-layered structure.

The first emitting part 530 can further include at least one of a first HTL 532 under the red EML 510 and a first ETL 534 over the red EML 510.

The second emitting part 540 can further include at least one of a second HTL 544 under the first blue EML 550 and a second ETL 548 on the first blue EML 550. In addition, the second emitting part 540 can further include an HIL 542 between the first electrode 360 and the first HTL 544.

The second emitting part 540 can further include at least one of a first EBL between the second HTL 544 and the first blue EML 550 and a first HBL between the first blue EML 550 and the second ETL 548.

The third emitting part 560 can further include at least one of a third HTL 562 under the second blue EML 570 and a third ETL 566 on the second blue EML 570. In addition, the third emitting part 560 can further include an EIL 568 between the second electrode 364 and the third ETL 566.

The third emitting part 560 can further include at least one of a first EBL between the third HTL 562 and the second blue EML 570 and a first HBL between the second blue EML 570 and the third ETL 566.

For example, the HIL 542 can include at least one of MTDATA, NATA, 4,4′,4″-tris(N-(naphthalene-1-yl)-N-phenyl-amino)triphenylamine 1T-NATA, 2T-NATA, CuPc, TCTA, NPB, HAT-CN, TDAPB, PEDOT/PSS and N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluoren-2-amine.

Each of the first to third HTLs 532, 544 and 564 can include at least one of TPD, NPB, CBP, poly-TPD, TFB, TAPC, DCDPA, N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluoren-2-amine, N-(biphenyl-4-yl)-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)biphenyl-4-amine, and the compound in Formula 4.

Each of the first to third ETLs 534, 548 and 566 can include at least one of Alq3, PBD, spiro-PBD, Liq, TPBi, BAlq, Bphen, NBphen, BCP, TAZ, NTAZ, TpPyPB, TmPPPyTz, PFNBr, TPQ, and TSPO1.

The EIL 568 can include at least one of an alkali halide compound, such as LiF, CsF, NaF, or BaF₂, and an organo-metallic compound, such as Liq, lithium benzoate, or sodium stearate.

The first CGL 580 is positioned between the first and second emitting parts 530 and 540, and the second CGL 590 is positioned between the first and third emitting parts 530 and 560. Namely, the first and second emitting parts 530 and 540 is connected to each other by the first CGL 580, and the first and third emitting parts 530 and 560 is connected to each other by the second CGL 590. The first CGL 580 can be a P-N junction type CGL of an N-type CGL 582 and a P-type CGL 584, and the second CGL 590 can be a P-N junction type CGL of an N-type CGL 592 and a P-type CGL 594.

In the first CGL 580, the N-type CGL 582 is positioned between the first HTL 532 and the second ETL 548, and the P-type CGL 584 is positioned between the N-type CGL 582 and the first HTL 532.

In the second CGL 590, the N-type CGL 592 is positioned between the first ETL 534 and the third HTL 562, and the P-type CGL 594 is positioned between the N-type CGL 592 and the third HTL 562.

Each of the N-type CGL 582 of the first CGL 580 and the N-type CGL 592 of the second CGL 590 can be an organic layer doped with an alkali metal, e.g., Li, Na, K or Cs, and/or an alkali earth metal, e.g., Mg, Sr, Ba or Ra. For example, each of the N-type CGL 582 of the first CGL 580 and the N-type CGL 592 of the second CGL 590 can include an organic material, e.g., 4,7-dipheny-1,10-phenanthroline (Bphen) or MTDATA, as a host, and the alkali metal and/or the alkali earth metal as a dopant can be doped with a weight % of about 0.01 to 30.

Each of the P-type CGL 584 of the first CGL 580 and the P-type CGL 594 of the second CGL 590 can include at least one of an inorganic material, which is selected from the group consisting of tungsten oxide (WOx), molybdenum oxide (MoOx), beryllium oxide (Be2O3), vanadium oxide (V2O5) and their combination, and an organic material, which is selected from the group consisting of NPD, HAT-CN, F4TCNQ, TPD, N,N,N′,N′-tetranaphthyl-benzidine (TNB), TCTA, N,N′-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8) and their combination.

The red EML 510 includes a first compound 512 as a red dopant (e.g., a red emitter), a second compound 514 as a p-type host (e.g., a first host) and a third compound 516 as an n-type host (e.g., a second host). In the red EML 510, the first compound 512 is represented by Formula 1-1, the second compound 514 is represented by Formula 2-1, and the third compound 516 is represented by Formula 3-1.

In the red EML 510, each of the second and third compounds 514 and 516 can have a weight % being greater than the first compound 512. For example, in the red EML 510, the first compound 512 can have a weight % of 1 to 20, e.g., 5 to 15.

In addition, in the red EML 510, a ratio of the weight % between the second compound 514 and the third compound 516 can be 1:3 to 3:1. For example, in the red EML 510, the second and third compounds 514 and 516 can have the same weight %.

In the first emitting part 510, the green EML 520 includes a green host and a green dopant. The green dopant can be one of a phosphorescent compound, a fluorescent compound and a delayed fluorescent compound. In addition, in the first emitting part 510, the yellow-green EML 525 includes a yellow-green host and a yellow-green dopant. The yellow-green dopant can be one of a phosphorescent compound, a fluorescent compound and a delayed fluorescent compound.

The first blue EML 550 in the second emitting part 540 includes a first blue host and a first blue dopant, and the second blue EML 570 in the third emitting part 560 includes a second blue host and a second blue dopant.

For example, each of the first and second blue hosts can be independently selected from the group consisting of mCP, mCP-CN, mCBP, CBP-CN, mCPPO1 Ph-mCP, TSPO1, CzBPCb, UGH-1, UGH-2, UGH-3, SPPO1 and SimCP.

For example, each of the first and second blue dopants can be independently selected from the group consisting of perylene, DPAVBi, DPAVB, BDAVBi, spiro-DPVBi, DSB, DSA, TBPe, Bepp2, PCAN, mer-Ir(pmi)3, fac-Ir(dpbic)3, Ir(tfpd)2pic, Ir(Fppy)3 and FIrpic.

In an exemplary aspect, each of the first and second blue EMLs 550 and 570 can include an anthracene derivative as a blue host and a boron derivative as a blue dopant.

As illustrated above, the OLED D4 of the present disclosure includes the first emitting part 530 including the red EML 510, the green EML 520 and the yellow-green EML 525, the second emitting part 540 including the first blue EML 550 and the third emitting part 560 including the second blue EML 570. As a result, the OLED D4 emits the white light.

In addition, the red EML 510 includes the first compound 512, which is represented by Formula 1-1, as a red dopant, the second compound 514, which is represented by Formula 2-1, as a first host or a p-type host, and the third compound 516, which is represented by Formula 3-1, as a second host or an n-type host. As a result, the OLED D4 has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

FIG. 8 is a cross-sectional view illustrating an OLED according to a seventh embodiment of the present disclosure.

As shown in FIG. 8, in the OLED D5, the organic emitting layer 362 includes a first emitting part 630 including a red EML 610 and a green EML 620 and a second emitting part 640 including a blue EML 650. In addition, the organic emitting layer 362 can further include a CGL 660 between the first and second emitting parts 630 and 640.

The first electrode 360 is an anode, and the second electrode 364 is a cathode. One of the first and second electrodes 360 and 364 can be a transparent (semitransparent) electrode, and the other one of the first and second electrodes 360 and 364 can be a reflective electrode.

The first emitting part 630 is positioned between the CGL 660 and the second electrode 364, and the second emitting part 640 is positioned between the CGL 660 and the first electrode 360. Alternatively, the first emitting part 630 can be positioned between the CGL 660 and the first electrode 360, and the second emitting part 640 can be positioned between the CGL 660 and the second electrode 364.

In the first emitting part 630, the green EML 620 is positioned on the red EML 610.

The first emitting part 630 can further include at least one of a first HTL 632 under the red EML 610 and a first ETL 634 over the red EML 610. When the first emitting part 630 includes the green EML 620, the first ETL 634 is positioned on the green EML 620. In addition, the first emitting part 630 can further include an EIL 636 between the first ETL 634 and the second electrode 364.

The second emitting part 640 can further include at least one of a second HTL 644 under the blue EML 650 and a second ETL 646 on the blue EML 650. In addition, the second emitting part 640 can further include an HIL 642 between the first electrode 360 and the first HTL 644.

For example, the HIL 642 can include at least one of MTDATA, NATA, 4,4′,4″-tris(N-(naphthalene-1-yl)-N-phenyl-amino)triphenylamine 1T-NATA, 2T-NATA, CuPc, TCTA, NPB, HAT-CN, TDAPB, PEDOT/PSS and N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluoren-2-amine.

Each of the first and second HTLs 632 and 644 can include at least one of TPD, NPB, CBP, poly-TPD, TFB, TAPC, DCDPA, N-(biphenyl-4-yl)-9,9-dimethyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluoren-2-amine, N-(biphenyl-4-yl)-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)biphenyl-4-amine, and the compound in Formula 4.

Each of the first and second ETLs 634 and 646 can include at least one of Alq3, PBD, spiro-PBD, Liq, TPBi, BAlq, Bphen, NBphen, BCP, TAZ, NTAZ, TpPyPB, TmPPPyTz, PFNBr, TPQ, and TSPO1.

The EIL 636 can include at least one of an alkali halide compound, such as LiF, CsF, NaF, or BaF₂, and an organo-metallic compound, such as Liq, lithium benzoate, or sodium stearate.

The CGL 660 is positioned between the first and second emitting parts 630 and 640. Namely, the first and second emitting parts 630 and 640 is connected to each other by the CGL 660.

The CGL 660 can be a P-N junction type CGL of an N-type CGL 662 and a P-type CGL 664.

In the CGL 660, the N-type CGL 662 is positioned between the first HTL 632 and the second ETL 646, and the P-type CGL 664 is positioned between the N-type CGL 662 and the first HTL 632.

The N-type CGL 662 can be an organic layer doped with an alkali metal, e.g., Li, Na, K or Cs, and/or an alkali earth metal, e.g., Mg, Sr, Ba or Ra. For example, the N-type CGL 662 can include an organic material, e.g., 4,7-dipheny-1,10-phenanthroline (Bphen) or MTDATA, as a host, and the alkali metal and/or the alkali earth metal as a dopant can be doped with a weight % of about 0.01 to 30.

The P-type CGL 664 can include at least one of an inorganic material, which is selected from the group consisting of tungsten oxide (WOx), molybdenum oxide (MoOx), beryllium oxide (Be2O3), vanadium oxide (V2O5) and their combination, and an organic material, which is selected from the group consisting of NPD, HAT-CN, F4TCNQ, TPD, N,N,N′,N′-tetranaphthyl-benzidine (TNB), TCTA, N,N′-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8) and their combination.

The red EML 610 includes a first compound 612 as a red dopant (e.g., a red emitter), a second compound 614 as a p-type host (e.g., a first host) and a third compound 616 as an n-type host (e.g., a second host). In the red EML 610, the first compound 612 is represented by Formula 1-1, the second compound 614 is represented by Formula 2-1, and the third compound 616 is represented by Formula 3-1.

In the red EML 610, each of the second and third compounds 614 and 616 can have a weight % being greater than the first compound 612. For example, in the red EML 610, the first compound 612 can have a weight % of 1 to 20, e.g., 5 to 15.

In addition, in the red EML 610, a ratio of the weight % between the second compound 614 and the third compound 616 can be 1:3 to 3:1. For example, in the red EML 610, the second and third compounds 614 and 616 can have the same weight %.

In the first emitting part 610, the green EML 620 includes a green host and a green dopant. The green dopant can be one of a phosphorescent compound, a fluorescent compound and a delayed fluorescent compound.

The blue EML 650 in the second emitting part 640 includes a blue host and a blue dopant.

For example, the blue host can be selected from the group consisting of mCP, mCP-CN, mCBP, CBP-CN, mCPPO1 Ph-mCP, TSPO1, CzBPCb, UGH-1, UGH-2, UGH-3, SPPO1 and SimCP, a and the blue dopant can be selected from the group consisting of perylene, DPAVBi, DPAVB, BDAVBi, spiro-DPVBi, DSB, DSA, TBPe, Bepp2, PCAN, mer-Ir(pmi)3, fac-Ir(dpbic)3, Ir(tfpd)2pic, Ir(Fppy)3 and FIrpic.

In an exemplary aspect, the blue EML 650 can include an anthracene derivative as a blue host and a boron derivative as a blue dopant.

As illustrated above, the OLED D5 of the present disclosure includes the first emitting part 630 including the red EML 610 and the green EML 620 and the second emitting part 640 including the blue EML 650. As a result, the OLED D5 emits the white light.

In addition, the red EML 610 includes the first compound 612, which is represented by Formula 1-1, as a red dopant, the second compound 614, which is represented by Formula 2-1, as a first host or a p-type host, and the third compound 616, which is represented by Formula 3-1, as a second host or an n-type host. As a result, the OLED D5 has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

OLED

The anode (ITO), the HIL (HATCN (the compound in Formula 5), 100 Å), the HTL (the compound in Formula 4, 700 Å), the EML (host and dopant (10 wt.%), 300 Å), the ETL (Alq3, 300 Å), the EIL (LiF, 10 Å) and the cathode (Al, 1000 Å) was sequentially deposited. An encapsulation film is formed by using an UV curable epoxy and a moisture getter to form the OLED.

1. Comparative Example 1 (Ref1)

The compound RD1 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

2. Examples

Examples 1 to 6 (Ex1 to Ex6)

The compound RD1 in Formula 8 as the dopant, the compound RHH-2 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 7 to 12 (Ex7 to Ex12)

The compound RD1 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 13 to 18 (Ex13 to Ex18)

The compound RD1 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 19 to 24 (Ex19 to Ex24)

The compound RD1 in Formula 8 as the dopant, the compound RHH-17 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 25 to 30 (Ex25 to Ex30)

The compound RD1 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 31 to 36 (Ex31 to Ex36)

The compound RD1 in Formula 8 as the dopant, the compound RHH-27 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 1 and Examples 1 to 36 are measured and listed in Tables 1 and 2. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref1	RD1	CBP	4.30	100	100
Ex1	RD1	RHH-2	REH-1	4.01	110	118
Ex2	RD1	RHH-2	REH-2	3.92	113	116
Ex3	RD1	RHH-2	REH-3	3.99	109	140
Ex4	RD1	RHH-2	REH-4	3.87	121	151
Ex5	RD1	RHH-2	REH-5	4.07	109	156
Ex6	RD1	RHH-2	REH-6	4.03	114	147
Ex7	RD1	RHH-5	REH-1	3.72	122	160
Ex8	RD1	RHH-5	REH-2	3.93	119	142
Ex9	RD1	RHH-5	REH-3	4.05	117	133
Ex10	RD1	RHH-5	REH-4	4.09	116	134
Ex11	RD1	RHH-5	REH-5	4.15	115	152
Ex12	RD1	RHH-5	REH-6	3.67	122	137
Ex13	RD1	RHH-11	REH-1	3.69	121	155
Ex14	RD1	RHH-11	REH-2	3.97	115	122
Ex15	RD1	RHH-11	REH-3	4.05	123	150
Ex16	RD1	RHH-11	REH-4	3.82	124	148
Ex17	RD1	RHH-11	REH-5	3.74	123	149
Ex18	RD1	RHH-11	REH-6	3.77	115	130

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref1	RD1	CBP	4.30	100	100
Ex19	RD1	RHH-17	REH-1	4.12	110	134
Ex20	RD1	RHH-17	REH-2	3.96	115	151
Ex21	RD1	RHH-17	REH-3	3.85	122	122
Ex22	RD1	RHH-17	REH-4	4.11	117	130
Ex23	RD1	RHH-17	REH-5	4.12	119	154
Ex24	RD1	RHH-17	REH-6	3.72	115	147
Ex25	RD1	RHH-22	REH-1	3.72	112	119
Ex26	RD1	RHH-22	REH-2	3.75	115	155
Ex27	RD1	RHH-22	REH-3	3.67	114	126
Ex28	RD1	RHH-22	REH-4	3.80	108	122
Ex29	RD1	RHH-22	REH-5	3.90	115	126
Ex30	RD1	RHH-22	REH-6	3.93	116	144
Ex31	RD1	RHH-27	REH-1	3.81	119	131
Ex32	RD1	RHH-27	REH-2	4.04	117	135
Ex33	RD1	RHH-27	REH-3	3.69	120	132
Ex34	RD1	RHH-27	REH-4	3.70	118	158
Ex35	RD1	RHH-27	REH-5	3.89	117	121
Ex36	RD1	RHH-27	REH-6	4.15	113	135

As shown in Tables 1 and 2, in comparison to the OLED of Ref1, in which the red EML includes the compound RD1 as a dopant and CBP as a host, the OLED of Ex1 to Ex36, in which the red EML includes the compound RD1 as a dopant, the compounds RHH-2, RHH-5, RHH-11, RHH-17, RHH-22 and RHH-27 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

3. Comparative Example 2 (Ref2)

The compound RD2 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

4. Examples

Examples 37 to 42 (Ex37 to Ex42)

The compound RD2 in Formula 8 as the dopant, the compound RHH-2 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 43 to 48 (Ex43 to Ex48)

The compound RD2 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 49 to 54 (Ex49 to Ex54)

The compound RD2 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 55 to 60 (Ex55 to Ex60)

The compound RD2 in Formula 8 as the dopant, the compound RHH-17 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 61 to 66 (Ex61 to Ex66)

The compound RD2 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 67 to 72 (Ex67 to Ex72)

The compound RD2 in Formula 8 as the dopant, the compound RHH-27 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 2 and Examples 37 to 72 are measured and listed in Tables 3 and 4. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref2	RD2	CBP	4.31	100	100
Ex37	RD2	RHH-2	REH-1	3.89	116	124
Ex38	RD2	RHH-2	REH-2	3.84	112	119
Ex39	RD2	RHH-2	REH-3	3.70	107	149
Ex40	RD2	RHH-2	REH-4	3.88	115	150
Ex41	RD2	RHH-2	REH-5	3.81	117	122
Ex42	RD2	RHH-2	REH-6	3.71	114	134
Ex43	RD2	RHH-5	REH-1	3.59	121	150
Ex44	RD2	RHH-5	REH-2	3.92	114	114
Ex45	RD2	RHH-5	REH-3	3.73	115	148
Ex46	RD2	RHH-5	REH-4	3.62	118	141
Ex47	RD2	RHH-5	REH-5	3.93	109	130
Ex48	RD2	RHH-5	REH-6	3.87	118	142
Ex49	RD2	RHH-11	REH-1	3.75	118	140
Ex50	RD2	RHH-11	REH-2	3.86	117	133
Ex51	RD2	RHH-11	REH-3	3.54	120	142
Ex52	RD2	RHH-11	REH-4	3.77	115	152
Ex53	RD2	RHH-11	REH-5	3.99	107	141
Ex54	RD2	RHH-11	REH-6	3.98	109	137

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref2	RD2	CBP	4.31	100	100
Ex55	RD2	RHH-17	REH-1	3.59	117	125
Ex56	RD2	RHH-17	REH-2	3.97	114	124
Ex57	RD2	RHH-17	REH-3	3.70	115	119
Ex58	RD2	RHH-17	REH-4	3.91	116	118
Ex59	RD2	RHH-17	REH-5	3.67	111	145
Ex60	RD2	RHH-17	REH-6	3.62	110	131
Ex61	RD2	RHH-22	REH-1	3.77	108	138
Ex62	RD2	RHH-22	REH-2	3.72	112	137
Ex63	RD2	RHH-22	REH-3	3.59	109	121
Ex64	RD2	RHH-22	REH-4	3.72	113	150
Ex65	RD2	RHH-22	REH-5	3.91	107	131
Ex66	RD2	RHH-22	REH-6	3.67	114	137
Ex67	RD2	RHH-27	REH-1	3.63	116	140
Ex68	RD2	RHH-27	REH-2	3.57	112	119
Ex69	RD2	RHH-27	REH-3	3.96	109	142
Ex70	RD2	RHH-27	REH-4	3.80	108	135
Ex71	RD2	RHH-27	REH-5	3.65	112	147
Ex72	RD2	RHH-27	REH-6	3.83	107	132

As shown in Tables 3 and 4, in comparison to the OLED of Ref2, in which the red EML includes the compound RD2 as a dopant and CBP as a host, the OLED of Ex37 to Ex72, in which the red EML includes the compound RD2 as a dopant, the compounds RHH-2, RHH-5, RHH-11, RHH-17, RHH-22 and RHH-27 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

5. Comparative Example 3 (Ref3)

The compound RD3 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

6. Examples

Examples 73 to 78 (Ex73 to Ex78)

The compound RD3 in Formula 8 as the dopant, the compound RHH-2 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 79 to 84 (Ex79 to Ex84)

The compound RD3 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 85 to 90 (Ex85 to Ex90)

The compound RD3 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 91 to 96 (Ex91 to Ex96)

The compound RD3 in Formula 8 as the dopant, the compound RHH-17 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 97 to 102 (Ex97 to Ex102)

The compound RD3 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 103 to 108 (Ex103 to Ex108)

The compound RD3 in Formula 8 as the dopant, the compound RHH-27 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 3 and Examples 73 to 108 are measured and listed in Tables 5 and 6. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref3	RD3	CBP	4.32	100	100
Ex73	RD3	RHH-2	REH-1	3.58	115	142
Ex74	RD3	RHH-2	REH-2	3.87	120	119
Ex75	RD3	RHH-2	REH-3	3.50	117	137
Ex76	RD3	RHH-2	REH-4	3.49	115	121
Ex77	RD3	RHH-2	REH-5	3.73	114	126
Ex78	RD3	RHH-2	REH-6	3.56	111	141
Ex79	RD3	RHH-5	REH-1	3.47	122	148
Ex80	RD3	RHH-5	REH-2	3.69	118	135
Ex81	RD3	RHH-5	REH-3	3.78	117	137
Ex82	RD3	RHH-5	REH-4	3.60	119	143
Ex83	RD3	RHH-5	REH-5	3.48	115	144
Ex84	RD3	RHH-5	REH-6	3.83	120	139
Ex85	RD3	RHH-11	REH-1	3.81	117	127
Ex86	RD3	RHH-11	REH-2	3.51	116	140
Ex87	RD3	RHH-11	REH-3	3.81	119	122
Ex88	RD3	RHH-11	REH-4	3.55	115	131
Ex89	RD3	RHH-11	REH-5	3.84	110	136
Ex90	RD3	RHH-11	REH-6	3.67	113	144

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref3	RD3	CBP	4.32	100	100
Ex91	RD3	RHH-17	REH-1	3.54	121	118
Ex92	RD3	RHH-17	REH-2	3.65	109	124
Ex93	RD3	RHH-17	REH-3	3.87	117	133
Ex94	RD3	RHH-17	REH-4	3.75	119	130
Ex95	RD3	RHH-17	REH-5	3.78	118	128
Ex96	RD3	RHH-17	REH-6	3.82	116	122
Ex97	RD3	RHH-22	REH-1	3.75	114	140
Ex98	RD3	RHH-22	REH-2	3.69	120	144
Ex99	RD3	RHH-22	REH-3	3.62	111	128
Ex100	RD3	RHH-22	REH-4	3.79	109	131
Ex101	RD3	RHH-22	REH-5	3.50	112	122
Ex102	RD3	RHH-22	REH-6	3.66	114	125
Ex103	RD3	RHH-27	REH-1	3.64	112	129
Ex104	RD3	RHH-27	REH-2	3.52	110	142
Ex105	RD3	RHH-27	REH-3	3.58	120	125
Ex106	RD3	RHH-27	REH-4	3.73	117	128
Ex107	RD3	RHH-27	REH-5	3.77	115	132
Ex108	RD3	RHH-27	REH-6	3.63	117	134

As shown in Tables 5 and 6, in comparison to the OLED of Ref3, in which the red EML includes the compound RD3 as a dopant and CBP as a host, the OLED of Ex73 to Ex108, in which the red EML includes the compound RD3 as a dopant, the compounds RHH-2, RHH-5, RHH-11, RHH-17, RHH-22 and RHH-27 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

7. Comparative Example 4 (Ref4)

The compound RD4 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

8. Examples

Examples 109 to 114 (Ex109 to Ex114)

The compound RD4 in Formula 8 as the dopant, the compound RHH-2 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 115 to 120 (Ex115 to Ex120)

The compound RD4 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 121 to 126 (Ex121 to Ex126)

The compound RD4 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 127 to 132 (Ex127 to Ex132)

The compound RD4 in Formula 8 as the dopant, the compound RHH-17 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 133 to 138 (Ex133 to Ex138)

The compound RD4 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 139 to 144 (Ex139 to Ex144)

The compound RD4 in Formula 8 as the dopant, the compound RHH-27 in Formula 2-4 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 4 and Examples 109 to 144 are measured and listed in Tables 7 and 8. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref4	RD4	CBP	4.32	100	100
Ex109	RD4	RHH-2	REH-1	4.15	109	125
Ex110	RD4	RHH-2	REH-2	4.13	113	120
Ex111	RD4	RHH-2	REH-3	4.05	112	138
Ex112	RD4	RHH-2	REH-4	4.18	110	119
Ex113	RD4	RHH-2	REH-5	3.85	118	126
Ex114	RD4	RHH-2	REH-6	3.92	115	138
Ex115	RD4	RHH-5	REH-1	3.80	117	142
Ex116	RD4	RHH-5	REH-2	4.05	111	131
Ex117	RD4	RHH-5	REH-3	3.87	114	132
Ex118	RD4	RHH-5	REH-4	3.83	109	129
Ex119	RD4	RHH-5	REH-5	4.01	115	133
Ex120	RD4	RHH-5	REH-6	4.05	112	116
Ex121	RD4	RHH-11	REH-1	4.02	117	128
Ex122	RD4	RHH-11	REH-2	4.10	116	117
Ex123	RD4	RHH-11	REH-3	4.08	113	116
Ex124	RD4	RHH-11	REH-4	4.03	110	119
Ex125	RD4	RHH-11	REH-5	3.92	120	123
Ex126	RD4	RHH-11	REH-6	3.88	115	120

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref4	RD4	CBP	4.32	100	100
Ex127	RD4	RHH-17	REH-1	4.02	115	128
Ex128	RD4	RHH-17	REH-2	3.83	117	135
Ex129	RD4	RHH-17	REH-3	3.97	121	121
Ex130	RD4	RHH-17	REH-4	4.12	116	137
Ex131	RD4	RHH-17	REH-5	3.85	111	117
Ex132	RD4	RHH-17	REH-6	4.10	115	134
Ex133	RD4	RHH-22	REH-1	3.91	113	131
Ex134	RD4	RHH-22	REH-2	3.97	114	126
Ex135	RD4	RHH-22	REH-3	4.02	117	128
Ex136	RD4	RHH-22	REH-4	3.85	110	122
Ex137	RD4	RHH-22	REH-5	3.99	112	118
Ex138	RD4	RHH-22	REH-6	3.94	116	133
Ex139	RD4	RHH-27	REH-1	3.87	115	125
Ex140	RD4	RHH-27	REH-2	4.06	116	134
Ex141	RD4	RHH-27	REH-3	4.04	109	137
Ex142	RD4	RHH-27	REH-4	4.14	108	129
Ex143	RD4	RHH-27	REH-5	3.90	116	136
Ex144	RD4	RHH-27	REH-6	3.97	110	125

As shown in Tables 7 and 8, in comparison to the OLED of Ref4, in which the red EML includes the compound RD4 as a dopant and CBP as a host, the OLED of Ex109 to Ex144, in which the red EML includes the compound RD4 as a dopant, the compounds RHH-2, RHH-5, RHH-11, RHH-17, RHH-22 and RHH-27 as a first host, and the compounds REH-1, REH-2, REH-3, REH-4, REH-5 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

9. Comparative Example 5 (Ref5)

The compound RD5 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

10. Examples

Examples 145 to 147 (Ex145 to Ex147)

The compound RD5 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 148 to 150 (Ex148 to Ex150)

The compound RD5 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 151 to 153 (Ex151 to Ex153)

The compound RD5 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 5 and Examples 145 to 153 are measured and listed in Table 9. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref5	RD5	CBP	4.30	100	100
Ex145	RD5	RHH-5	REH-1	3.78	123	160
Ex146	RD5	RHH-5	REH-2	4.10	115	135
Ex147	RD5	RHH-5	REH-6	3.79	121	138
Ex148	RD5	RHH-11	REH-1	3.81	119	157
Ex149	RD5	RHH-11	REH-2	4.09	120	152
Ex150	RD5	RHH-11	REH-6	3.84	113	131
Ex151	RD5	RHH-22	REH-1	3.83	111	125
Ex152	RD5	RHH-22	REH-2	3.81	114	127
Ex153	RD5	RHH-22	REH-6	4.01	117	145

As shown in Table 9, in comparison to the OLED of Ref5, in which the red EML includes the compound RD5 as a dopant and CBP as a host, the OLED of Ex145 to Ex153, in which the red EML includes the compound RD5 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

11. Comparative Example 6 (Ref6)

The compound RD6 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

12. Examples

Examples 154 to 156 (Ex154 to Ex156)

The compound RD6 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 157 to 159 (Ex157 to Ex159)

The compound RD6 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 160 to 162 (Ex160 to Ex162)

The compound RD6 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 6 and Examples 154 to 162 are measured and listed in Table 10. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref6	RD6	CBP	4.30	100	100
Ex154	RD6	RHH-5	REH-1	3.73	118	154
Ex155	RD6	RHH-5	REH-2	3.75	112	153
Ex156	RD6	RHH-5	REH-6	3.85	115	149
Ex157	RD6	RHH-11	REH-1	3.78	116	140
Ex158	RD6	RHH-11	REH-2	3.69	114	145
Ex159	RD6	RHH-11	REH-6	3.97	111	139
Ex160	RD6	RHH-22	REH-1	3.82	109	142
Ex161	RD6	RHH-22	REH-2	3.71	110	125
Ex162	RD6	RHH-22	REH-6	3.80	112	136

As shown in Table 10, in comparison to the OLED of Ref6, in which the red EML includes the compound RD6 as a dopant and CBP as a host, the OLED of Ex154 to Ex162, in which the red EML includes the compound RD6 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

13. Comparative Example 7 (Ref7)

The compound RD7 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

14. Examples

Examples 163 to 165 (Ex163 to Ex165)

The compound RD7 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 166 to 168 (Ex166 to Ex168)

The compound RD7 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 169 to 171 (Ex169 to Ex171)

The compound RD7 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 7 and Examples 163 to 171 are measured and listed in Table 11. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref7	RD7	CBP	4.31	100	100
Ex163	RD7	RHH-5	REH-1	3.67	117	149
Ex164	RD7	RHH-5	REH-2	3.82	116	137
Ex165	RD7	RHH-5	REH-6	3.89	114	143
Ex166	RD7	RHH-11	REH-1	3.87	115	127
Ex167	RD7	RHH-11	REH-2	3.91	114	121
Ex168	RD7	RHH-11	REH-6	3.72	112	138
Ex169	RD7	RHH-22	REH-1	3.79	113	140
Ex170	RD7	RHH-22	REH-2	3.81	110	128
Ex171	RD7	RHH-22	REH-6	3.79	109	127

As shown in Table 11, in comparison to the OLED of Ref7, in which the red EML includes the compound RD7 as a dopant and CBP as a host, the OLED of Ex163 to Ex171, in which the red EML includes the compound RD7 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

15. Comparative Example 8 (Ref8)

The compound RD8 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

16. Examples

Examples 172 to 174 (Ex172 to Ex174)

The compound RD8 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 175 to 177 (Ex175 to Ex177)

The compound RD8 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 178 to 180 (Ex178 to Ex180)

The compound RD8 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 8 and Examples 172 to 180 are measured and listed in Table 12. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref8	RD8	CBP	4.31	100	100
Ex172	RD8	RHH-5	REH-1	3.84	116	141
Ex173	RD8	RHH-5	REH-2	3.85	112	142
Ex174	RD8	RHH-5	REH-6	4.02	111	123
Ex175	RD8	RHH-11	REH-1	4.01	114	134
Ex176	RD8	RHH-11	REH-2	4.05	110	119
Ex177	RD8	RHH-11	REH-6	3.87	112	127
Ex178	RD8	RHH-22	REH-1	3.92	113	136
Ex179	RD8	RHH-22	REH-2	3.97	115	132
Ex180	RD8	RHH-22	REH-6	3.93	117	128

As shown in Table 12, in comparison to the OLED of Ref8, in which the red EML includes the compound RD8 as a dopant and CBP as a host, the OLED of Ex172 to Ex180, in which the red EML includes the compound RD8 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

17. Comparative Example 9 (Ref9)

The compound RD9 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

18. Examples

Examples 181 to 183 (Ex181 to Ex183)

The compound RD9 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 184 to 186 (Ex184 to Ex186)

The compound RD9 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 187 to 189 (Ex187 to Ex189)

The compound RD9 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 9 and Examples 181 to 189 are measured and listed in Table 13. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref9	RD9	CBP	4.28	100	100
Ex181	RD9	RHH-5	REH-1	3.77	121	142
Ex182	RD9	RHH-5	REH-2	3.93	112	129
Ex183	RD9	RHH-5	REH-6	3.76	119	135
Ex184	RD9	RHH-11	REH-1	3.80	118	143
Ex185	RD9	RHH-11	REH-2	3.95	117	147
Ex186	RD9	RHH-11	REH-6	3.81	113	131
Ex187	RD9	RHH-22	REH-1	3.83	109	126
Ex188	RD9	RHH-22	REH-2	3.79	112	124
Ex189	RD9	RHH-22	REH-6	3.97	115	137

As shown in Table 13, in comparison to the OLED of Ref9, in which the red EML includes the compound RD9 as a dopant and CBP as a host, the OLED of Ex181 to Ex189, in which the red EML includes the compound RD9 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

19. Comparative Example 10 (Ref10)

The compound RD10 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

20. Examples

Examples 190 to 192 (Ex190 to Ex192)

The compound RD10 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 193 to 195 (Ex193 to Ex195)

The compound RD10 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 196 to 198 (Ex196 to Ex198)

The compound RD10 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 10 and Examples 190 to 198 are measured and listed in Table 14. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref10	RD10	CBP	4.29	100	100
Ex 190	RD10	RHH-5	REH-1	3.70	119	141
Ex191	RD10	RHH-5	REH-2	3.81	112	143
Ex192	RD10	RHH-5	REH-6	3.76	116	137
Ex193	RD10	RHH-11	REH-1	3.82	115	136
Ex194	RD10	RHH-11	REH-2	3.72	117	130
Ex195	RD10	RHH-11	REH-6	3.85	112	127
Ex196	RD10	RHH-22	REH-1	3.87	115	131
Ex197	RD10	RHH-22	REH-2	3.73	113	125
Ex198	RD10	RHH-22	REH-6	3.85	114	133

As shown in Table 14, in comparison to the OLED of Ref10, in which the red EML includes the compound RD10 as a dopant and CBP as a host, the OLED of Ex190 to Ex198, in which the red EML includes the compound RD10 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

21. Comparative Example 11 (Ref11)

The compound RD11 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

22. Examples

Examples 199 to 201 (Ex199 to Ex201)

The compound RD11 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 202 to 204 (Ex202 to Ex204)

The compound RD11 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 205 to 207 (Ex205 to Ex207)

The compound RD11 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 11 and Examples 199 to 207 are measured and listed in Table 15. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref11	RD11	CBP	4.29	100	100
Ex 199	RD11	RHH-5	REH-1	3.64	123	139
Ex200	RD11	RHH-5	REH-2	3.75	117	132
Ex201	RD11	RHH-5	REH-6	3.81	119	137
Ex202	RD11	RHH-11	REH-1	3.82	116	128
Ex203	RD11	RHH-11	REH-2	3.85	113	122
Ex204	RD11	RHH-11	REH-6	3.69	111	135
Ex205	RD11	RHH-22	REH-1	3.71	118	131
Ex206	RD11	RHH-22	REH-2	3.68	112	129
Ex207	RD11	RHH-22	REH-6	3.65	114	132

As shown in Table 15, in comparison to the OLED of Ref11, in which the red EML includes the compound RD11 as a dopant and CBP as a host, the OLED of Ex199 to Ex207, in which the red EML includes the compound RD11 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

23. Comparative Example 12 (Ref12)

The compound RD12 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

24. Examples

Examples 208 to 210 (Ex208 to Ex210)

The compound RD12 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 211 to 213 (Ex211 to Ex213)

The compound RD12 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 214 to 216 (Ex214 to Ex216)

The compound RD12 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 12 and Examples 208 to 216 are measured and listed in Table 16. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref12	RD12	CBP	4.30	100	100
Ex208	RD12	RHH-5	REH-1	3.83	118	137
Ex209	RD12	RHH-5	REH-2	3.82	117	138
Ex210	RD12	RHH-5	REH-6	3.95	112	122
Ex211	RD12	RHH-11	REH-1	3.97	113	128
Ex212	RD12	RHH-11	REH-2	3.93	110	119
Ex213	RD12	RHH-11	REH-6	3.84	114	127
Ex214	RD12	RHH-22	REH-1	3.85	113	130
Ex215	RD12	RHH-22	REH-2	3.94	117	132
Ex216	RD12	RHH-22	REH-6	3.87	118	125

As shown in Table 16, in comparison to the OLED of Ref12, in which the red EML includes the compound RD12 as a dopant and CBP as a host, the OLED of Ex208 to Ex216, in which the red EML includes the compound RD12 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

25. Comparative Example 13 (Ref13)

The compound RD13 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

26. Examples

Examples 217 to 219 (Ex217 to Ex219)

The compound RD13 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 220 to 222 (Ex220 to Ex222)

The compound RD13 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 223 to 225 (Ex223 to Ex225)

The compound RD13 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 13 and Examples 217 to 225 are measured and listed in Table 17. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref13	RD13	CBP	4.32	100	100
Ex217	RD13	RHH-5	REH-1	3.80	123	160
Ex218	RD13	RHH-5	REH-2	4.03	115	141
Ex219	RD13	RHH-5	REH-6	3.79	121	118
Ex220	RD13	RHH-11	REH-1	3.89	119	158
Ex221	RD13	RHH-11	REH-2	4.01	120	162
Ex222	RD13	RHH-11	REH-6	3.92	115	137
Ex223	RD13	RHH-22	REH-1	3.87	113	140
Ex224	RD13	RHH-22	REH-2	3.81	117	131
Ex225	RD13	RHH-22	REH-6	4.00	119	155

As shown in Table 17, in comparison to the OLED of Ref13, in which the red EML includes the compound RD13 as a dopant and CBP as a host, the OLED of Ex217 to Ex225, in which the red EML includes the compound RD13 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

27. Comparative Example 14 (Ref14)

The compound RD14 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

28. Examples

Examples 226 to 228 (Ex226 to Ex228)

The compound RD14 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 229 to 231 (Ex229 to Ex231)

The compound RD14 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 232 to 234 (Ex232 to Ex234)

The compound RD14 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 14 and Examples 226 to 234 are measured and listed in Table 18. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref14	RD14	CBP	4.32	100	100
Ex226	RD14	RHH-5	REH-1	3.75	125	163
Ex227	RD14	RHH-5	REH-2	3.82	118	165
Ex228	RD14	RHH-5	REH-6	3.85	121	152
Ex229	RD14	RHH-11	REH-1	3.83	123	151
Ex230	RD14	RHH-11	REH-2	3.76	117	146
Ex231	RD14	RHH-11	REH-6	3.92	115	139
Ex232	RD14	RHH-22	REH-1	3.87	116	137
Ex233	RD14	RHH-22	REH-2	3.78	113	134
Ex234	RD14	RHH-22	REH-6	3.90	118	129

As shown in Table 18, in comparison to the OLED of Ref14, in which the red EML includes the compound RD14 as a dopant and CBP as a host, the OLED of Ex226 to Ex234, in which the red EML includes the compound RD14 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

29. Comparative Example 15 (Ref15)

The compound RD15 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

30. Examples

Examples 235 to 237 (Ex235 to Ex237)

The compound RD15 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 238 to 240 (Ex238 to Ex240)

The compound RD15 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 241 to 243 (Ex241 to Ex243)

The compound RD15 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 15 and Examples 235 to 243 are measured and listed in Table 19. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref15	RD15	CBP		4.32	100	100
Ex235	RD15	RHH-5	REH-1	3.73	124	158
Ex236	RD15	RHH-5	REH-2	3.85	118	145
Ex237	RD15	RHH-5	REH-6	3.90	119	143
Ex238	RD15	RHH-11	REH-1	3.86	116	137
Ex239	RD15	RHH-11	REH-2	3.87	117	128
Ex240	RD15	RHH-11	REH-6	3.72	119	159
Ex241	RD15	RHH-22	REH-1	3.80	116	154
Ex242	RD15	RHH-22	REH-2	3.83	112	136
Ex243	RD15	RHH-22	REH-6	3.86	113	141

As shown in Table 19, in comparison to the OLED of Ref15, in which the red EML includes the compound RD15 as a dopant and CBP as a host, the OLED of Ex235 to Ex243, in which the red EML includes the compound RD15 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

31. Comparative Example 16 (Ref16)

The compound RD16 in Formula 8 and the compound (CBP) in Formula 7 are used as the dopant and host, respectively, to form the EML.

32. Examples

Examples 244 to 246 (Ex244 to Ex246)

The compound RD16 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 247 to 249 (Ex247 to Ex249)

The compound RD16 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 250 to 252 (Ex250 to Ex252)

The compound RD16 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 16 and Examples 244 to 252 are measured and listed in Table 20. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref16	RD16	CBP	4.32	100	100
Ex244	RD16	RHH-5	REH-1	3.90	115	144
Ex245	RD16	RHH-5	REH-2	3.93	114	141
Ex246	RD16	RHH-5	REH-6	4.02	111	129
Ex247	RD16	RHH-11	REH-1	4.01	115	135
Ex248	RD16	RHH-11	REH-2	4.05	110	127
Ex249	RD16	RHH-11	REH-6	3.91	114	123
Ex250	RD16	RHH-22	REH-1	3.99	116	145
Ex251	RD16	RHH-22	REH-2	3.93	113	137
Ex252	RD16	RHH-22	REH-6	3.95	112	138

As shown in Table 20, in comparison to the OLED of Ref16, in which the red EML includes the compound RD16 as a dopant and CBP as a host, the OLED of Ex244 to Ex252, in which the red EML includes the compound RD16 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

33. Comparative Example 17 (Ref17)

The compound RD17 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

34. Examples

Examples 253 to 255 (Ex253 to Ex255)

The compound RD17 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 256 to 258 (Ex256 to Ex258)

The compound RD17 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 259 to 261 (Ex259 to Ex261)

The compound RD17 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 17 and Examples 253 to 261 are measured and listed in Table 21. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref17	RD17	CBP	4.29	100	100
Ex253	RD17	RHH-5	REH-1	3.75	127	161
Ex254	RD17	RHH-5	REH-2	4.02	120	145
Ex255	RD17	RHH-5	REH-6	3.76	124	147
Ex256	RD17	RHH-11	REH-1	3.77	125	162
Ex257	RD17	RHH-11	REH-2	3.99	128	164
Ex258	RD17	RHH-11	REH-6	3.82	119	142
Ex259	RD17	RHH-22	REH-1	3.77	115	137
Ex260	RD17	RHH-22	REH-2	3.81	117	130
Ex261	RD17	RHH-22	REH-6	3.94	119	150

As shown in Table 21, in comparison to the OLED of Ref17, in which the red EML includes the compound RD17 as a dopant and CBP as a host, the OLED of Ex253 to Ex261, in which the red EML includes the compound RD17 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

35. Comparative Example 18 (Ref18)

The compound RD18 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

36. Examples

Examples 262 to 264 (Ex262 to Ex264)

The compound RD18 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 265 to 267 (Ex265 to Ex267)

The compound RD18 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 268 to 270 (Ex268 to Ex270)

The compound RD18 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 18 and Examples 262 to 270 are measured and listed in Table 22. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref18	RD18	CBP	4.23	100	100
Ex262	RD18	RHH-5	REH-1	3.89	136	146
Ex263	RD18	RHH-5	REH-2	4.12	128	133
Ex264	RD18	RHH-5	REH-6	3.91	135	137
Ex265	RD18	RHH-11	REH-1	3.93	131	147
Ex266	RD18	RHH-11	REH-2	4.04	137	150
Ex267	RD18	RHH-11	REH-6	3.93	128	132
Ex268	RD18	RHH-22	REH-1	3.95	121	129
Ex269	RD18	RHH-22	REH-2	3.88	125	131
Ex270	RD18	RHH-22	REH-6	4.02	131	135

As shown in Table 22, in comparison to the OLED of Ref18, in which the red EML includes the compound RD18 as a dopant and CBP as a host, the OLED of Ex262 to Ex270, in which the red EML includes the compound RD18 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

37. Comparative Example 19 (Ref19)

The compound RD19 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

38. Examples

Examples 271 to 273 (Ex271 to Ex273)

The compound RD19 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 274 to 276 (Ex274 to Ex276)

The compound RD19 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 277 to 279 (Ex277 to Ex279)

The compound RD19 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 19 and Examples 271 to 279 are measured and listed in Table 23. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref19	RD19	CBP	4.26	100	100
Ex271	RD19	RHH-5	REH-1	3.85	128	153
Ex272	RD19	RHH-5	REH-2	4.04	120	136
Ex273	RD19	RHH-5	REH-6	3.86	127	139
Ex274	RD19	RHH-11	REH-1	3.87	125	149
Ex275	RD19	RHH-11	REH-2	4.00	124	154
Ex276	RD19	RHH-11	REH-6	3.88	123	137
Ex277	RD19	RHH-22	REH-1	3.90	116	139
Ex278	RD19	RHH-22	REH-2	3.84	119	127
Ex279	RD19	RHH-22	REH-6	3.98	121	146

As shown in Table 23, in comparison to the OLED of Ref19, in which the red EML includes the compound RD19 as a dopant and CBP as a host, the OLED of Ex271 to Ex279, in which the red EML includes the compound RD19 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

39. Comparative Example 20 (Ref20)

The compound RD20 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

40. Examples

Examples 280 to 282 (Ex280 to Ex282)

The compound RD20 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 283 to 285 (Ex283 to Ex285)

The compound RD20 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 286 to 288 (Ex286 to Ex288)

The compound RD20 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 20 and Examples 280 to 288 are measured and listed in Table 24. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref20	RD20	CBP	4.27	100	100
Ex280	RD20	RHH-5	REH-1	3.90	132	153
Ex281	RD20	RHH-5	REH-2	4.04	126	141
Ex282	RD20	RHH-5	REH-6	3.91	129	142
Ex283	RD20	RHH-11	REH-1	3.89	126	150
Ex284	RD20	RHH-11	REH-2	4.00	131	157
Ex285	RD20	RHH-11	REH-6	3.93	125	146
Ex286	RD20	RHH-22	REH-1	3.92	122	139
Ex287	RD20	RHH-22	REH-2	4.01	124	140
Ex288	RD20	RHH-22	REH-6	4.03	119	148

As shown in Table 24, in comparison to the OLED of Ref20, in which the red EML includes the compound RD20 as a dopant and CBP as a host, the OLED of Ex280 to Ex288, in which the red EML includes the compound RD20 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

41. Comparative Example 21 (Ref21)

The compound RD21 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

42. Examples

Examples 289 to 291 (Ex289 to Ex291)

The compound RD21 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 292 to 294 (Ex292 to Ex294)

The compound RD21 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 295 to 297 (Ex295 to Ex297)

The compound RD21 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 21 and Examples 289 to 297 are measured and listed in Table 25. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref21	RD21	CBP	4.30	100	100
Ex289	RD21	RHH-5	REH-1	3.73	124	152
Ex290	RD21	RHH-5	REH-2	3.82	116	155
Ex291	RD21	RHH-5	REH-6	3.88	121	148
Ex292	RD21	RHH-11	REH-1	3.81	119	151
Ex293	RD21	RHH-11	REH-2	3.72	123	144
Ex294	RD21	RHH-11	REH-6	4.01	116	141
Ex295	RD21	RHH-22	REH-1	3.96	114	148
Ex296	RD21	RHH-22	REH-2	3.75	118	131
Ex297	RD21	RHH-22	REH-6	3.81	120	140

As shown in Table 25, in comparison to the OLED of Ref21, in which the red EML includes the compound RD21 as a dopant and CBP as a host, the OLED of Ex289 to Ex297, in which the red EML includes the compound RD21 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

43. Comparative Example 22 (Ref22)

The compound RD22 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

44. Examples

Examples 298 to 300 (Ex298 to Ex300)

The compound RD22 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 301 to 303 (Ex301 to Ex303)

The compound RD22 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 304 to 306 (Ex304 to Ex306)

The compound RD22 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 22 and Examples 298 to 306 are measured and listed in Table 26. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref22	RD22	CBP	4.24	100	100
Ex298	RD22	RHH-5	REH-1	3.90	124	144
Ex299	RD22	RHH-5	REH-2	3.93	119	143
Ex300	RD22	RHH-5	REH-6	4.01	128	138
Ex301	RD22	RHH-11	REH-1	3.89	122	140
Ex302	RD22	RHH-11	REH-2	3.86	125	131
Ex303	RD22	RHH-11	REH-6	4.02	118	135
Ex304	RD22	RHH-22	REH-1	3.93	117	128
Ex305	RD22	RHH-22	REH-2	3.85	121	123
Ex306	RD22	RHH-22	REH-6	3.90	120	132

As shown in Table 26, in comparison to the OLED of Ref22, in which the red EML includes the compound RD22 as a dopant and CBP as a host, the OLED of Ex298 to Ex306, in which the red EML includes the compound RD22 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

45. Comparative Example 23 (Ref23)

The compound RD23 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

46. Examples

Examples 307 to 309 (Ex307 to Ex309)

The compound RD23 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 310 to 312 (Ex310 to Ex312)

The compound RD23 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 313 to 315 (Ex313 to Ex315)

The compound RD23 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 23 and Examples 307 to 315 are measured and listed in Table 27. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref23	RD23	CBP	4.27	100	100
Ex307	RD23	RHH-5	REH-1	3.76	127	149
Ex308	RD23	RHH-5	REH-2	3.82	121	142
Ex309	RD23	RHH-5	REH-6	3.91	123	145
Ex310	RD23	RHH-11	REH-1	3.81	120	147
Ex311	RD23	RHH-11	REH-2	3.75	119	139
Ex312	RD23	RHH-11	REH-6	3.97	117	142
Ex313	RD23	RHH-22	REH-1	3.85	119	135
Ex314	RD23	RHH-22	REH-2	3.71	117	129
Ex315	RD23	RHH-22	REH-6	3.73	122	132

As shown in Table 27, in comparison to the OLED of Ref23, in which the red EML includes the compound RD23 as a dopant and CBP as a host, the OLED of Ex307 to Ex315, in which the red EML includes the compound RD23 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

47. Comparative Example 24 (Ref24)

The compound RD24 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

48. Examples

Examples 316 to 318 (Ex316 to Ex318)

The compound RD24 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 319 to 321 (Ex319 to Ex321)

The compound RD24 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 322 to 324 (Ex322 to Ex324)

The compound RD24 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 24 and Examples 316 to 324 are measured and listed in Table 28. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref24	RD24	CBP	4.27	100	100
Ex316	RD24	RHH-5	REH-1	3.81	126	149
Ex317	RD24	RHH-5	REH-2	3.88	120	145
Ex318	RD24	RHH-5	REH-6	3.93	124	150
Ex319	RD24	RHH-11	REH-1	3.82	122	139
Ex320	RD24	RHH-11	REH-2	3.79	123	141
Ex321	RD24	RHH-11	REH-6	4.01	116	137
Ex322	RD24	RHH-22	REH-1	3.89	115	140
Ex323	RD24	RHH-22	REH-2	3.81	120	131
Ex324	RD24	RHH-22	REH-6	3.83	119	136

As shown in Table 28, in comparison to the OLED of Ref24, in which the red EML includes the compound RD24 as a dopant and CBP as a host, the OLED of Ex316 to Ex324, in which the red EML includes the compound RD24 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

49. Comparative Example 25 (Ref25)

The compound RD25 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

50. Examples

Examples 325 to 327 (Ex325 to Ex327)

The compound RD25 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 328 to 330 (Ex328 to Ex330)

The compound RD25 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 331 to 333 (Ex331 to Ex333)

The compound RD25 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 25 and Examples 325 to 333 are measured and listed in Table 29. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref25	RD25	CBP	4.30	100	100
Ex325	RD25	RHH-5	REH-1	3.81	125	153
Ex326	RD25	RHH-5	REH-2	3.88	120	148
Ex327	RD25	RHH-5	REH-6	3.92	122	150
Ex328	RD25	RHH-11	REH-1	3.93	119	139
Ex329	RD25	RHH-11	REH-2	3.89	117	130
Ex330	RD25	RHH-11	REH-6	3.79	122	146
Ex331	RD25	RHH-22	REH-1	3.85	118	152
Ex332	RD25	RHH-22	REH-2	3.80	117	141
Ex333	RD25	RHH-22	REH-6	3.87	121	133

As shown in Table 29, in comparison to the OLED of Ref25, in which the red EML includes the compound RD25 as a dopant and CBP as a host, the OLED of Ex325 to Ex333, in which the red EML includes the compound RD25 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

51. Comparative Example 26 (Ref26)

The compound RD26 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

52. Examples

Examples 334 to 336 (Ex334 to Ex336)

The compound RD26 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 337 to 339 (Ex337 to Ex339)

The compound RD26 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 340 to 342 (Ex340 to Ex342)

The compound RD26 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 26 and Examples 334 to 342 are measured and listed in Table 30. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref26	RD26	CBP	4.24	100	100
Ex334	RD26	RHH-5	REH-1	3.91	123	140
Ex335	RD26	RHH-5	REH-2	3.93	122	143
Ex336	RD26	RHH-5	REH-6	4.01	124	136
Ex337	RD26	RHH-11	REH-1	3.99	119	129
Ex338	RD26	RHH-11	REH-2	3.98	117	131
Ex339	RD26	RHH-11	REH-6	3.92	120	141
Ex340	RD26	RHH-22	REH-1	3.95	122	130
Ex341	RD26	RHH-22	REH-2	3.88	116	127
Ex342	RD26	RHH-22	REH-6	3.90	118	127

As shown in Table 30, in comparison to the OLED of Ref26, in which the red EML includes the compound RD26 as a dopant and CBP as a host, the OLED of Ex334 to Ex342, in which the red EML includes the compound RD26 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

53. Comparative Example 27 (Ref27)

The compound RD27 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

54. Examples

Examples 343 to 345 (Ex343 to Ex345)

The compound RD27 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 346 to 348 (Ex346 to Ex348)

The compound RD27 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 349 to 351 (Ex349 to Ex351)

The compound RD27 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 27 and Examples 343 to 351 are measured and listed in Table 31. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref27	RD27	CBP	4.26	100	100
Ex343	RD27	RHH-5	REH-1	3.88	122	142
Ex344	RD27	RHH-5	REH-2	3.92	118	143
Ex345	RD27	RHH-5	REH-6	3.99	121	139
Ex346	RD27	RHH-11	REH-1	4.02	117	128
Ex347	RD27	RHH-11	REH-2	3.96	115	125
Ex348	RD27	RHH-11	REH-6	3.89	118	140
Ex349	RD27	RHH-22	REH-1	3.93	120	139
Ex350	RD27	RHH-22	REH-2	3.90	119	132
Ex351	RD27	RHH-22	REH-6	3.91	114	122

As shown in Table 31, in comparison to the OLED of Ref27, in which the red EML includes the compound RD27 as a dopant and CBP as a host, the OLED of Ex343 to Ex351, in which the red EML includes the compound RD27 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

55. Comparative Example 28 (Ref28)

The compound RD28 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

56. Examples

Examples 352 to 354 (Ex352 to Ex354)

The compound RD28 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 355 to 357 (Ex355 to Ex357)

The compound RD28 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 358 to 360 (Ex358 to Ex360)

The compound RD28 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 28 and Examples 352 to 360 are measured and listed in Table 32. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref28	RD28	CBP	4.26	100	100
Ex352	RD28	RHH-5	REH-1	3.95	119	148
Ex353	RD28	RHH-5	REH-2	3.97	120	145
Ex354	RD28	RHH-5	REH-6	4.03	123	140
Ex355	RD28	RHH-11	REH-1	4.01	117	132
Ex356	RD28	RHH-11	REH-2	3.99	116	123
Ex357	RD28	RHH-11	REH-6	3.94	122	149
Ex358	RD28	RHH-22	REH-1	4.05	119	142
Ex359	RD28	RHH-22	REH-2	3.91	116	132
Ex360	RD28	RHH-22	REH-6	3.92	118	134

As shown in Table 32, in comparison to the OLED of Ref28, in which the red EML includes the compound RD28 as a dopant and CBP as a host, the OLED of Ex352 to Ex360, in which the red EML includes the compound RD28 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

57. Comparative Example 29 (Ref29)

The compound RD29 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

58. Examples

Examples 361 to 363 (Ex361 to Ex363)

The compound RD29 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 364 to 366 (Ex364 to Ex366)

The compound RD29 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 367 to 369 (Ex367 to Ex369)

The compound RD29 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 29 and Examples 361 to 369 are measured and listed in Table 33. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref29	RD29	CBP	4.30	100	100
Ex361	RD29	RHH-5	REH-1	4.02	118	140
Ex362	RD29	RHH-5	REH-2	3.99	115	143
Ex363	RD29	RHH-5	REH-6	4.03	112	135
Ex364	RD29	RHH-11	REH-1	4.00	117	134
Ex365	RD29	RHH-11	REH-2	4.10	116	129
Ex366	RD29	RHH-11	REH-6	3.97	110	131
Ex367	RD29	RHH-22	REH-1	4.04	115	133
Ex368	RD29	RHH-22	REH-2	4.02	122	143
Ex369	RD29	RHH-22	REH-6	3.98	119	140

As shown in Table 33, in comparison to the OLED of Ref29, in which the red EML includes the compound RD29 as a dopant and CBP as a host, the OLED of Ex361 to Ex369, in which the red EML includes the compound RD29 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

59. Comparative Example 30 (Ref30)

The compound RD30 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

60. Examples

Examples 370 to 372 (Ex370 to Ex372)

The compound RD30 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 373 to 375 (Ex373 to Ex375)

The compound RD30 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 376 to 378 (Ex376 to Ex378)

The compound RD30 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 30 and Examples 370 to 378 are measured and listed in Table 34. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref30	RD30	CBP	4.25	100	100
Ex370	RD30	RHH-5	REH-1	4.05	118	136
Ex371	RD30	RHH-5	REH-2	4.02	117	134
Ex372	RD30	RHH-5	REH-6	4.07	122	126
Ex373	RD30	RHH-11	REH-1	4.01	120	132
Ex374	RD30	RHH-11	REH-2	4.10	123	120
Ex375	RD30	RHH-11	REH-6	3.98	116	128
Ex376	RD30	RHH-22	REH-1	4.03	118	130
Ex377	RD30	RHH-22	REH-2	4.07	121	137
Ex378	RD30	RHH-22	REH-6	4.11	119	131

As shown in Table 34, in comparison to the OLED of Ref30, in which the red EML includes the compound RD30 as a dopant and CBP as a host, the OLED of Ex370 to Ex378, in which the red EML includes the compound RD30 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

61. Comparative Example 31 (Ref31)

The compound RD31 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

62. Examples

Examples 379 to 381 (Ex379 to Ex381)

The compound RD31 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 382 to 384 (Ex382 to Ex384)

The compound RD31 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 385 to 387 (Ex385 to Ex387)

The compound RD31 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 31 and Examples 379 to 387 are measured and listed in Table 35. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref31	RD31	CBP	4.27	100	100
Ex379	RD31	RHH-5	REH-1	3.99	121	137
Ex380	RD31	RHH-5	REH-2	4.00	116	134
Ex381	RD31	RHH-5	REH-6	4.06	117	128
Ex382	RD31	RHH-11	REH-1	4.05	115	132
Ex383	RD31	RHH-11	REH-2	4.10	119	119
Ex384	RD31	RHH-11	REH-6	3.98	113	123
Ex385	RD31	RHH-22	REH-1	4.02	115	131
Ex386	RD31	RHH-22	REH-2	4.07	122	138
Ex387	RD31	RHH-22	REH-6	4.01	118	133

As shown in Table 35, in comparison to the OLED of Ref31, in which the red EML includes the compound RD31 as a dopant and CBP as a host, the OLED of Ex379 to Ex387, in which the red EML includes the compound RD31 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

63. Comparative Example 32 (Ref32)

The compound RD32 in Formula 8 as the dopant and the compound (CBP) in Formula 7 as the host are used to form the EML.

64. Examples

Examples 388 to 390 (Ex388 to Ex390)

The compound RD32 in Formula 8 as the dopant, the compound RHH-5 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 391 to 393 (Ex391 to Ex393)

The compound RD32 in Formula 8 as the dopant, the compound RHH-11 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

Examples 394 to 396 (Ex394 to Ex396)

The compound RD32 in Formula 8 as the dopant, the compound RHH-22 in Formula 2-4 as a first host, and the compounds REH-1, REH-2 and REH-6 in Formula 3-7 as a second dopant are used to form the EML. (first host: second host=1:1 (weight %))

The properties, i.e., the driving voltage (V), the external quantum efficiency (EQE) and the lifespan (LT95), of the OLEDs manufactured in Comparative Example 32 and Examples 388 to 396 are measured and listed in Table 36. The properties of the OLED were measured at the room temperature using a current source (KEITHLEY) and a photometer (PR 650). The driving voltage and the external quantum efficiency were measured under the condition of a current density of 10 mA/cm², and the lifespan (the time to reach 95% of the lifespan) was measured at 40° C. under 40 mA/cm² condition.

	EML	V	EQE (%)	LT95 (%)
Dopant	Host
Ref32	RD32	CBP	4.27	100	100
Ex388	RD32	RHH-5	REH-1	4.03	122	141
Ex389	RD32	RHH-5	REH-2	4.05	117	136
Ex390	RD32	RHH-5	REH-6	4.10	118	129
Ex391	RD32	RHH-11	REH-1	4.11	116	132
Ex392	RD32	RHH-11	REH-2	4.15	121	126
Ex393	RD32	RHH-11	REH-6	3.99	119	130
Ex394	RD32	RHH-22	REH-1	4.02	118	129
Ex395	RD32	RHH-22	REH-2	4.07	123	135
Ex396	RD32	RHH-22	REH-6	3.98	121	140

As shown in Table 36, in comparison to the OLED of Ref32, in which the red EML includes the compound RD32 as a dopant and CBP as a host, the OLED of Ex388 to Ex396, in which the red EML includes the compound RD32 as a dopant, the compounds RHH-5, RHH-11 and RHH-22 as a first host, and the compounds REH-1, REH-2 and REH-6 as a second host, has advantages in the driving voltage, the luminous efficiency and the luminous lifespan.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the scope of the invention. Thus, it is intended that the present disclosure cover the modifications and variations of the present disclosure provided they come within the scope of the appended claims.

Claims

1. An organic light emitting diode, comprising: a first electrode;a second electrode facing the first electrode; anda first emitting part including a first red emitting material layer and positioned between the first and second electrodes,wherein the first red emitting material layer includes a first compound, a second compound and a third compound,wherein the first compound is represented by Formula 1-1: wherein in Formula 1-1:M is molybdenum (Mo), tungsten (W), rhenium (Re), ruthenium (Ru), osmium (Os), rhodium (Rh), iridium (Ir), palladium (Pd), platinum (Pt) or silver (Ag);each of A and B is a carbon atom;R is an unsubstituted or substituted C1-C20 alkyl group, an unsubstituted or substituted C1-C20 alkyl silyl group, an unsubstituted or substituted C3-C30 alicyclic group, an unsubstituted or substituted C3-C30 hetero alicyclic group, an unsubstituted or substituted C6-C30 aromatic group or an unsubstituted or substituted C3-C30 hetero aromatic group;each of X1 to X11 is independently a carbon atom, CR1 or N;only one of: a ring (a) with X3-X5, Y1 and A; or a ring (b) with X8-X11, Y2 and B is formed; and if the ring (a) is formed, each of X3 and Y1 is a carbon atom,X6 and X7 or X7 and X8 forms an unsubstituted or substituted C3-C30 alicyclic ring, an unsubstituted or substituted C3-C30 aromatic ring or an unsubstituted or substituted C3-C30 hetero aromatic ring; andY2 is BR2, CR2R3, C═O, SiR2R3, GeR2R3, PR2, P═O, O, S, SO2, Se, SeO2, Te, TeO2, or NRa, wherein Ra is an unsubstituted or substituted C1-C20 alkyl group or an unsubstituted or substituted C6-C30 aromatic group;if the ring (b) is forms, each of X8 and Y2 is a carbon atom,X1 and X2 or X2 and X3 forms an unsubstituted or substituted C3-C30 hetero alicyclic ring, an unsubstituted or substituted C3-C30 aromatic ring or an unsubstituted or substituted C3-C30 hetero aromatic ring; andY1 is BR2, CR2R3, C═O, SiR2R3, GeR2R3, PR2, P═O, O, S, SO2, Se, SeO2, Te, TeO2, or NRa, wherein Ra is an unsubstituted or substituted C1-C20 alkyl group or an unsubstituted or substituted C6-C30 aromatic group,each of R1 to R3 is independently hydrogen, protium, deuterium, tritium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrozone group, an unsubstituted or substituted C1-C20 alkyl group, an unsubstituted or substituted C2-C20 alkynyl group, an unsubstituted or substituted C1-C20 alkoxy group, an amino group, an unsubstituted or substituted C1-C20 alkyl amino group, an unsubstituted or substituted C1-C20 alkyl silyl group, a carboxyl group, a nitrile group, an isonitrile group, a sulfanyl group, a phosphino group, an unsubstituted or substituted C3-C30 alicyclic group, an unsubstituted or substituted C3-C30 hetero alicyclic group, an unsubstituted or substituted C6-C30 aromatic group or an unsubstituted or substituted C3-C30 hetero aromatic group,optionally,two adjacent R1, and/or R2 and R3 form an unsubstituted or substituted C3-C30 alicyclic ring, an unsubstituted or substituted C3-C30 hetero alicyclic ring, an unsubstituted or substituted C6-C30 aromatic ring or an unsubstituted or substituted C3-C30 hetero aromatic ring;is an auxiliary ligand;m is an integer of 1 to 3;n is an integer of 0 to 2; andm+n is an oxidation number of M,wherein the second compound is represented by Formula 2-1:wherein in Formula 2-1:each of X and Y is independently selected from the group consisting of an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group,R4 is selected from the group consisting of an unsubstituted or substituted C1-C20 alkyl group and an unsubstituted or substituted C6-C30 aryl group,a1 is an integer of 0 to 9,L1 is selected from the group consisting of an unsubstituted or substituted C6-C30 arylene group and an unsubstituted or substituted C3-C30 heteroarylene group, anda2 is 0 or 1,wherein the third compound is represented by Formula 3-1:wherein in Formula 3-1:X is NR8, O or S,R8 is selected from the group consisting of an unsubstituted or substituted C1-C10 alkyl group, an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group,R7 is selected from the group consisting of an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group,L2 is selected from the group consisting of an unsubstituted or substituted C6-C30 arylene group and an unsubstituted or substituted C3-C30 heteroarylene group, andb is 0 or 1.

2. The organic light emitting diode of claim 1, wherein Formula 1-1 is represented by Formula 1-2: wherein each of X21 to X27 is independently CR1 or N,wherein Y3 is BR2, CR2R3, C═O, SiR2R3, GeR2R3, PR2, P═O, O, S, SO2, Se, SeO2, Te, TeO2, or NRa, andwherein each of M, R, , m, n, R1 to R3 and Ra is same as defined in Formula 1-1.

3. The organic light emitting diode of claim 1, wherein Formula 1-1 is represented by Formula 1-3: wherein each of X31 to X38 is independently CR1 or N,wherein Y4 is BR2, CR2R3, C═O, SiR2R3, GeR2R3, PR2, P═O, O, S, SO2, Se, SeO2, Te, TeO2, or NRa, andwherein each of M, , m, n, R1 to R3 and Ra is same as defined in Formula 1-1.

4. The organic light emitting diode of claim 2, wherein Formula 1-2 is represented by Formula 1-4 or Formula 1-5: wherein each of X41 to X45 is independently CR1 or N, andwherein each of M, R, , m, n, R1 to R3 and Ra is same as defined in Formula 1-1, and X21 to X24 and Y3 is same as defined in Formula 1-2.

5. The organic light emitting diode of claim 3, wherein Formula 1-3 is represented by Formula 1-6 or Formula 1-7: wherein each of X51 to X55 is independently CR1 or N, andwherein each of M, , m, n, R1 to R3 and Ra is same as defined in Formula 1-1, and each of X34 to X38 and Y4 is same as defined in Formula 1-3.

6. The organic light emitting diode of claim 1, wherein Formula 1-1 is represented by one of Formula 1-8 to Formula 1-11: wherein R in Formulas 1-8 and 1-9 is same as defined in Formula 1-1,wherein each of X21 to X24, X34 to X38, X41 to X45 and X51 to X55 is independently CR1 or N,wherein each of Y3 and Y4 is independently BR2, CR2R3, C═O, SiR2R3, GeR2R3, PR2, P═O, O, S, SO2, Se, SeO2, Te or TeO2, or NRa,wherein each of R1 to R3 and Ra is same as defined in Formula 1-1,wherein each of R11 to R13 is independently selected from the group consisting of hydrogen, protium, deuterium, tritium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrozone group, an unsubstituted or substituted C1-C20 alkyl group, an unsubstituted or substituted C2-C20 alkenyl group, an unsubstituted or substituted C2-C20 alkynyl group, an unsubstituted or substituted C1-C20 alkoxy group, an amino group, an unsubstituted or substituted C1-C20 alkyl amino group, an unsubstituted or substituted C1-C20 alkyl silyl group, a carboxyl group, a nitrile group, an isonitrile group, a sulfanyl group, a phosphino group, an unsubstituted or substituted C3-C30 alicyclic group, an unsubstituted or substituted C3-C30 hetero alicyclic group, an unsubstituted or substituted C6-C30 aromatic group and an unsubstituted or substituted C3-C30 hetero aromatic group,wherein m is an integer of 1 to 3, and n is an integer of 0 to 2, andwherein m+n is 3.

7. The organic light emitting diode of claim 1, wherein Formula 1-1 is represented by one of Formula 1-12 to Formula 1-15: wherein R in Formulas 1-12 and 1-13 is same as defined in Formula 1-1,wherein each of X21 to X24, X34 to X38, X41 to X45 and X51 to X55 is independently CR1 or N,wherein each of Y3 and Y4 is independently BR2, CR2R3, C═O, SiR2R3, GeR2R3, PR2, P═O, O, S, SO2, Se, SeO2, Te or TeO2, or NRa,wherein each of R1 to R3 and Ra is same as defined in Formula 1-1,wherein each of R61 to R64 is independently selected from the group consisting of hydrogen, protium, deuterium, tritium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrozone group, an unsubstituted or substituted C1-C20 alkyl group, an unsubstituted or substituted C2-C20 alkenyl group, an unsubstituted or substituted C2-C20 alkynyl group, an unsubstituted or substituted C1-C20 alkoxy group, an amino group, an unsubstituted or substituted C1-C20 alkyl amino group, an unsubstituted or substituted C1-C20 alkyl silyl group, a carboxyl group, a nitrile group, an isonitrile group, a sulfanyl group, a phosphino group, an unsubstituted or substituted C3-C30 alicyclic group, an unsubstituted or substituted C3-C30 hetero alicyclic group, an unsubstituted or substituted C6-C30 aromatic group and an unsubstituted or substituted C3-C30 hetero aromatic group,wherein m is an integer of 1 to 3, and n is an integer of 0 to 2, andwherein m+n is 3.

8. The organic light emitting diode of claim 1, wherein Formula 1-1 is represented by one of Formula 1-16 to Formula 1-19: wherein R in Formulas 1-16 and 1-17 is same as defined in Formula 1-1,wherein each of X21 to X24, X34 to X38, X41 to X45 and X51 to X55 is independently CR1 or N,wherein each of Y3 and Y4 is independently BR2, CR2R3, C═O, SiR2R3, GeR2R3, PR2, P═O, O, S, SO2, Se, SeO2, Te or TeO2, or NRa,wherein each of R1 to R3 and Ra is same as defined in Formula 1-1,wherein each of R71 to R73 is independently selected from the group consisting of hydrogen, protium, deuterium, tritium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrozone group, an unsubstituted or substituted C1-C20 alkyl group, an unsubstituted or substituted C2-C20 alkenyl group, an unsubstituted or substituted C2-C20 alkynyl group, an unsubstituted or substituted C1-C20 alkoxy group, an amino group, an unsubstituted or substituted C1-C20 alkyl amino group, an unsubstituted or substituted C1-C20 alkyl silyl group, a carboxyl group, a nitrile group, an isonitrile group, a sulfanyl group, a phosphino group, an unsubstituted or substituted C3-C30 alicyclic group, an unsubstituted or substituted C3-C30 hetero alicyclic group, an unsubstituted or substituted C6-C30 aromatic group and an unsubstituted or substituted C3-C30 hetero aromatic group,wherein m is an integer of 1 to 3, and n is an integer of 0 to 2, andwherein m+n is 3.

9. The organic light emitting diode of claim 1, wherein Formula 1-1 is represented by one of Formula 1-20 to Formula 1-23: wherein R in Formulas 1-20 and 1-21 is same as defined in Formula 1-1,wherein each of X21 to X24, X34 to X38, X41 to X45 and X51 to X55 is independently CR1 or N,wherein each of Y3 and Y4 is independently BR2, CR2R3, C═O, SiR2R3, GeR2R3, PR2, P═O, O, S, SO2, Se, SeO2, Te or TeO2, or NRa,wherein each of R1 to R3 and Ra is same as defined in Formula 1-1,wherein each of R81 to R85 in Formulas 1-20 to 1-23 is independently selected from the group consisting of hydrogen, protium, deuterium, tritium, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrozone group, an unsubstituted or substituted C1-C20 alkyl group, an unsubstituted or substituted C2-C20 alkenyl group, an unsubstituted or substituted C2-C20 alkynyl group, an unsubstituted or substituted C1-C20 alkoxy group, an amino group, an unsubstituted or substituted C1-C20 alkyl amino group, an unsubstituted or substituted C1-C20 alkyl silyl group, a carboxyl group, a nitrile group, an isonitrile group, a sulfanyl group, a phosphino group, an unsubstituted or substituted C3-C30 alicyclic group, an unsubstituted or substituted C3-C30 hetero alicyclic group, an unsubstituted or substituted C6-C30 aromatic group and an unsubstituted or substituted C3-C30 hetero aromatic group,wherein m is an integer of 1 to 3, and n is an integer of 0 to 2, andwherein m+n is 3.

10. The organic light emitting diode of claim 1, wherein the first compound is one of the following compounds:

11. The organic light emitting diode of claim 1, wherein Formula 2-1 is represented by Formula 2-2:

12. The organic light emitting diode of claim 1, wherein Formula 2-1 is represented by Formula 2-3:

13. The organic light emitting diode of claim 1, wherein the second compound is one of the following compounds:

14. The organic light emitting diode of claim 1, wherein Formula 3-1 is represented by Formula 3-2: wherein,X is NR8, O or S,R8 is selected from the group consisting of an unsubstituted or substituted C1-C10 alkyl group, an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group, andR7 is selected from the group consisting of an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group.

15. The organic light emitting diode of claim 1, wherein Formula 3-1 is represented by Formula 3-3: whereinX is NR8, O or S,R8 is selected from the group consisting of an unsubstituted or substituted C1-C10 alkyl group, an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group,R7 is selected from the group consisting of an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group,L2 is selected from the group consisting of an unsubstituted or substituted C6-C30 arylene group and an unsubstituted or substituted C3-C30 heteroarylene group, andb is 0 or 1.

16. The organic light emitting diode of claim 15, wherein Formula 3-3 is represented by Formula 3-4: wherein,X is NR8, O or S,R8 is selected from the group consisting of an unsubstituted or substituted C1-C10 alkyl group, an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group, andR7 is selected from the group consisting of an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group.

17. The organic light emitting diode of claim 1, wherein Formula 3-1 is represented by Formula 3-5: wherein,X is NR8, O or S,R8 is selected from the group consisting of an unsubstituted or substituted C1-C10 alkyl group, an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group,R7 is selected from the group consisting of an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group,L2 is selected from the group consisting of an unsubstituted or substituted C6-C30 arylene group and an unsubstituted or substituted C3-C30 heteroarylene group, andb is 0 or 1.

18. The organic light emitting diode of claim 17, wherein Formula 3-5 is represented by Formula 3-6: wherein,X is NR8, O or S,R8 is selected from the group consisting of an unsubstituted or substituted C1-C10 alkyl group, an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group, andR7 is selected from the group consisting of an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C3-C30 heteroaryl group.

19. The organic light emitting diode of claim 1, wherein the third compound is one of the following compounds: .

20. The organic light emitting diode of claim 1, wherein each of a weight % of the second and third compounds is greater than a weight % of the first compound.

21. The organic light emitting diode of claim 1, further comprising: a second emitting part including a second red emitting material layer and positioned between the first emitting part and the second electrode; anda charge generation layer positioned between the first and second emitting parts.

22. The organic light emitting diode of claim 21, wherein the second emitting material layer includes a fourth compound represented by Formula 1-1, a fifth compound represented by Formula 2-1 and a sixth compound represented by Formula 3-1.

23. The organic light emitting diode of claim 1, further comprising: a second emitting part including a first blue emitting material layer and positioned between the first electrode and the first emitting part; anda first charge generation layer positioned between the first and second emitting parts.

24. The organic light emitting diode of claim 23, further comprising: a third emitting part including a second blue emitting material layer and positioned between the first emitting part and the second electrode; anda second charge generation layer positioned between the first and third emitting parts.

25. The organic light emitting diode of claim 24, wherein the first emitting part further includes a green emitting material layer positioned between the red emitting material layer and the second charge generation layer.

26. The organic light emitting diode of claim 25, wherein the first emitting part further includes a yellow-green emitting material layer positioned between the red and green emitting material layers.

27. An organic light emitting device, comprising: a substrate;the organic light emitting diode of claim 1 positioned on the substrate.