Iridium complexes and organic electroluminescence device using the same

Patent metadata

Field	Value
Publication number	US-2016233442-A1
Application number	US-201615014049-A
Country	US
Kind code	A1
Filing date	Feb 3, 2016
Priority date	Feb 11, 2015
Publication date	Aug 11, 2016
Grant date	—

Abstract

The present invention discloses an iridium complexes and the organic EL device employing the iridium complexes as light emitting guest of emitting layer can display good performance like as lower driving voltage and power consumption, increasing efficiency and half-life time. Additional, the present invention provide the suitable emitting host (H1 to H6) to collocate with the energy level of iridium complexes for the present invention. Also provided a novel preparation method to synthesize the novel ligand such as 6-bromo-3,3-dimethyl-1-phenyl-1,3-dihydroindeno[2,1-b]carbazole.

First claim

The invention claimed is:

1 . An iridium complexes is represented by the following formula(1):

wherein m represents an integer of 1 or 2, X independently represents a divalent bridge selected from the atom or group consisting from O, S and N(R 7 ), A ring represents a substituted or unsubstituted benzene ring, Y 1 and Y 2 are different and Y 1 , Y 2 represent nitrogen or carbon atom; R 1 to R 7 are the same or different, R 1 to R 7 independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms and a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms.

2 . The iridium complexes according to claim 1 , wherein the iridium complexes formula(1) is represented by the following formula(2) to formula(7):

wherein X independently represents a divalent bridge selected from the atom or group consisting from O, S and N(R 7 ), R 1 to R 7 are the same or different, R 1 to R 7 independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms and a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms.

3 . An organic electroluminescence device comprising a pair of electrodes consisting of a cathode and an anode, and between the pairs of electrodes comprising at least a light emitting layer, one or more layers of organic thin film layer, wherein the light emitting layer comprising the iridium complexes for an organic electroluminescence device according to claim 1 .

4 . The organic electroluminescence device according to claim 3 , wherein the light emitting layer comprising the iridium complexes with a general formula(1) is a phosphorescent guest material.

5 . The organic electroluminescent device according to claim 3 , wherein the light emitting layer comprising two or three types of emitting host with the following formulas:

wherein X is a divalent bridge selected from the atom or group consisting from O, S, C(R 8 ) 2 , N(R 9 ) and Si(R 10 ) 2 , m represents an integer of 0 to 4, n represents an integer of 0 to 8, R 1 to R 4 and R 8 to R 10 are independently selected from the group consisting of a hydrogen atom, a halide, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms and a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms.

6 . The organic electroluminescent device according to claim 3 , wherein the light emitting host is selected from the group consisting of:

7 . The organic electroluminescent device according to claim 3 , wherein the light emitting layer emits phosphorescent green or yellow lights.

8 . The organic electroluminescent device according to claim 3 , wherein the device is an organic light emitting device.

9 . The organic electroluminescent device according to claim 3 , wherein the device is a lighting panel.

10 . According to claim 1 , the iridium complexes with a general formula(1) are

Assignees

• Yen Feng-Wen
• Chang Cheng-Hao
• Luminescence Tech Corp

Inventors

• Yen Feng-Wen
• Chang Cheng-Hao

Classifications

• H01L51/0085 Primary

  Electricity · mapped topic

• H01L51/0072

  Electricity · mapped topic

• C07F15/0033 Primary

  Iridium compounds · CPC title

• C09K11/02

  Use of particular materials as binders, particle coatings or suspension media therefor · CPC title

• H01L51/5016

  Electricity · mapped topic