Iridium complex, preparation method thereof and electroluminescent device applying iridium complex

A technology of iridium complexes and complexes, which is applied in the field of light-emitting devices and organic electroluminescent devices, can solve the problems of efficiency roll-off and efficiency reduction, and achieve the effects of convenient design and production, stable chemical properties, and high luminous efficiency

Inactive Publication Date: 2017-02-22
AAC MICROTECH CHANGZHOU +1
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  • Abstract
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  • Application Information

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Problems solved by technology

In addition, in the current commonly used materials, the hole mobility of hole transport materials is much higher than that of electron transport materials, and the commonly used host materials are mainly hole transport, which will lead to a large number of redundant holes. Aggregation of holes at the interface between the light-emitting layer and the electron-transporting layer
These factors can l

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  • Iridium complex, preparation method thereof and electroluminescent device applying iridium complex
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  • Iridium complex, preparation method thereof and electroluminescent device applying iridium complex

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[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The terms used in the present invention, unless otherwise specified, generally have the meanings commonly understood by those skilled in the art.

[0026] A kind of iridium complex, it comprises and contains two main ligands and an auxiliary ligand, and described main ligand is 2,3-diphenylquinoxaline, 2,3-diphenylpyridine [2,3- b]pyrazine, 2,3-diphenylpyrazine[2,3-b]pyrazine, dibenzo[a,c]phenazine, dipyrido[3,2-a:2',3' -c] Any one of phenazine derivatives. The 2,3-diphenylquinoxaline, 2,3-diphenylpyridin[2,3-b]pyrazine, 2,3-diphenylpyrazine[2,3-b]pyrazine, Dibenzo[a,c]phenazine, dipyrido[3,2-a:2',3'-c]phenazine derivatives selected from: any of the substituted. The auxiliary ligand is acetylacetone or dibenzoylmethane.

[0027] The iridium complexes of the present invention have used iridium trichloride, ethylenediamine, 1,2-diphenylamine...

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Abstract

The invention relates to an iridium complex provided with novel main ligands and using acetylacetone or dibenzoyl methane as an auxiliary ligand. The main ligands in iridium complex molecules are 2,3-diphenyl quinoxaline, 2,3-diphenyl pyridine[2,3-b]pyrazine, 2,3-diphenyl pyrazine[2,3-b]pyrazine, dibenzo[a,c]phenazine and a bipyridino[3,2-a: 2', 3'-c] phenazine derivative. The novel iridium complex has the advantages of high luminous efficiency, stable chemical properties, easy sublimation purification and the like, and the device performance is also excellent. By modifying molecular structures of the ligands, the luminous intensity and efficiency of the complex can be adjusted within a red light wavelength range, and convenience is provided for design and production of organic electroluminescent displays and lighting sources.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of organic electroluminescent devices, in particular to a class of iridium complexes, a preparation method thereof and a light-emitting device using the iridium complexes. [0003] 【Background technique】 [0004] Against the background of increasing global energy demand and worrying ecological environment, governments of various countries have vigorously developed sustainable energy-saving technologies and industries based on high technology. Organic electroluminescent devices (OLEDs) have attracted much attention because of their advantages such as wide viewing angle, high brightness, low energy consumption and flexible devices, and are known as the key technology that will dominate the future display world. In recent years, a large number of studies have shown that among many complexes of heavy metal elements, iridium complexes are considered to be the most ideal choice of phosphorescent materials ...

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07F15/0033C09K2211/185H10K85/342H10K50/00
Inventor 郑佑轩荆一铭王毅潘毅左景林周洁虞磊
Owner AAC MICROTECH CHANGZHOU
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