Organometallic complex and organic electroluminescence device using the same

Abstract

Provided are an organometallic complex providing highly efficient phosphorescence and an organic electroluminescence device using the same. The organometallic complex can be used to form an organic layer of the organic electroluminescence device, efficiently emits light of a wavelength corresponding to red light, and has high brightness and low operating voltage.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete appreciation of the invention, and many of the attendant advantages thereof, will be readily apparent as the same becomes better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings in which like reference symbols indicate the same or similar components, wherein:

FIGS. 1 a through 1f are diagrams schematically illustrate various laminated structures of an organic electroluminescent device according to embodiments of the present invention; and

FIG. 2 is a diagram illustrating an organic electroluminescent device manufactured according to an embodiment of the present invention.

Claims

1. An organometallic complex comprising a compound represented by Formula 1:

2. The organometallic complex of claim 1, wherein A is derived from at least one selected from the group consisting of substituted or unsubstituted indazole, substituted or unsubstituted imidazole, substituted or unsubstituted imidazoline, substituted or unsubstituted imidazolyl, substituted or unsubstituted imidazole derivative, substituted or unsubstituted pyrazole, substituted or unsubstituted benzotriazole, substituted or unsubstituted benzothiadiazole, substituted or unsubstituted oxadiazole, substituted or unsubstituted thiadiazole, substituted or unsubstituted pyrazoline, substituted or unsubstituted pyrazolidine, substituted or unsubstituted benzimidazole, and substituted or unsubstituted triazole.

3. The organometallic complex of claim 1, wherein A is a triazole derivative.

4. The organometallic complex of claim 1, wherein the compound is represented by Formula 2:

5. The organometallic complex of claim 1, wherein the compound is represented by Formula 3:

6. The organometallic complex of claim 1, wherein the compound is represented by Formula 4:

7. The organometallic complex of claim 1, wherein the compound is represented by Formula 5:

8. The organometallic complex of claim 1, wherein the compound is represented by Formula 6:

9. The organometallic complex of claim 1, wherein the cyclometalating ligand (CyN-CyC) is represented by one of Formulas 11 through 40:

10. The organometallic complex of claim 1, wherein M is one of Ir and Pt.

11. An organic electroluminescence device having an organic layer interposed between a pair of electrodes, the organic layer comprising the organometallic complex of claim 1.

12. An organometallic complex represented by Formula 2:

13. An organic electroluminescence device having an organic layer interposed between a pair of electrodes, the organic layer comprising the organometallic complex of claim 12.

14. An organic electroluminescence device, comprising: a first electrode;a second electrode; andan organic layer comprising a light emitting layer comprised of an organometallic complex represented by Formula 1:

15. The organic electroluminescence device of claim 14, wherein the organometallic complex is in an amount of 1 to 30 parts by weight based on 100 parts by weight of materials used to form the light emitting layer.

16. The organic electroluminescence device of claim 14, wherein the organic layer further comprises at least one host selected from the group consisting of one kind of polymer host, a mixture host of one or more kinds of polymer host, a mixture host of a polymer and a small molecule, a small molecule host, and a non-emitting polymer matrix.

17. The organic electroluminescence device of claim 14, wherein the organic layer further comprises green phosphorescent materials or blue phosphorescent materials.

18. The organic electroluminescence device of claim 14, wherein the organometallic complex is represented by one of Formulae 3 through 6:

19. The organic electroluminescence device of claim 14, wherein the M is Ir or Pt.