Organic electroluminescence device

Abstract

The invention provides an organic electroluminescence device having a pair of electrodes at least one of which is transparent or translucent and plural organic compound layers positioned between the pair of electrodes, at least one of the plural organic compound layers being a hole transport layer in which an electron transport material is mixed with at least one hole transport polymer, and at least one of the plural organic compound layers containing a luminescent material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Exemplary embodiments of the invention will be described in detail based on the following figures, wherein:

FIG. 1 is a schematic sectional view showing an example of the layer configuration of an organic electroluminescence device of the invention;

FIG. 2 is a schematic sectional view showing another example of the layer configuration of the organic electroluminescence device of the invention; and

FIG. 3 is a schematic sectional view showing other example of the layer configuration of the organic electroluminescence device of the invention.

Claims

1. An organic electroluminescence device comprising a pair of electrodes at least one of which is transparent or translucent and a plurality of organic compound layers positioned between the pair of electrodes, at least one of the plurality of organic compound layers being a hole transport layer in which an electron transport material is mixed with at least one hole transport polymer, and at least one of the plurality of organic compound layers containing a luminescent material.

2. An organic electroluminescence device comprising a pair of electrodes at least one of which is transparent or translucent and a plurality of organic compound layers positioned between the pair of electrodes, at least one of the plurality of organic compound layers being an electron transport layer in which a hole transport material is mixed with at least one electron transport material, and at least one of the plurality of organic compound layers containing a luminescent material.

3. The organic electroluminescence device of claim 2, wherein the hole transport material is a hole transport low molecular weight compound.

4. The organic electroluminescence device of claim 2, wherein the hole transport material is a hole transport polymer.

5. The organic electroluminescence device of claim 1, wherein the electron transport material is the luminescent material.

6. The organic electroluminescence device of claim 1, wherein the luminescent material is a luminescent polymer.

7. The organic electroluminescence device of claim 1, wherein the electron transport material is an electron transport polymer.

8. The organic electroluminescence device of claim 1, wherein the hole transport polymer is a polymer containing at least one of structures represented by the following formulas (I-1) and (I-2) as a partial structure of a repeating unit:

9. The organic electroluminescence device of claim 8, wherein the hole transport polymer is a polymer containing at least one selected from the repeating structures represented by the following formulas (II), (III), (IV) and (V):

10. The organic electroluminescence device of claim 1, wherein the luminescent material is a pi-conjugate polymer.

11. The organic electroluminescence device of claim 2, wherein the electron transport material is the luminescent material.

12. The organic electroluminescence device of claim 2, wherein the luminescent material is a luminescent polymer.

13. The organic electroluminescence device of claim 2, wherein the electron transport material is an electron transport polymer.

14. The organic electroluminescence device of claim 4, wherein the hole transport polymer is a polymer containing at least one of structures represented by the following formulas (I-1) and (I-2) as a partial structure of a repeating unit:

15. The organic electroluminescence device of claim 14, wherein the hole transport polymer is a polymer containing at least one selected from the repeating structures represented by the following formulas (II), (III), (IV) and (V):

16. The organic electroluminescence device of claim 2, wherein the luminescent material is a pi-conjugate polymer.