Organic compound based on triazine and benzimidazolone structures and application of organic compound in organic electroluminescent device

A technology of organic compounds and benzimidazoles, applied to organic electroluminescent devices, in the field of organic compounds based on triazine and benzimidazolone structures, can solve the problem of affecting the OLED radiation spectrum angle distribution and complex fabrication process And other issues
CN110964038AInactive Publication Date: 2020-04-07JIANGSU SUNERA TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGSU SUNERA TECH CO LTD
Publication Date
2020-04-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an organic compound based on triazine and benzimidazolone structures and an application of the organic compound in an organic electroluminescent device. The structure of the compound simultaneously contains the triazine and benzimidazolone structures, and the compound has high glass transition temperature and molecular thermal stability; the compound is low in absorption and high in refractive index in the field of visible light, and after the compound is applied to a covering layer of an OLED device, the light extraction efficiency of the OLED device can be effectively improved; the compound disclosed by the invention also has a relatively deep HOMO energy level and high electron mobility, can be used as a hole blocking or electron transport layer material of theOLED device, and can effectively block holes or energy from being transmitted from a light emitting layer to one side of an electron layer, thereby improving the recombination efficiency of the holesand electrons in the light emitting layer, improving the light emitting efficiency of the OLED device, and prolonging the service life of the OLED device.
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Description

technical field

[0001] The invention relates to the technical field of semiconductors, in particular to an organic compound based on a triazine and benzimidazolone structure and its application in an organic electroluminescent device. Background technique

[0002] Due to the huge gap between the external quantum efficiency and internal quantum efficiency of OLEDs, the development of OLEDs is greatly restricted. Therefore, how to improve the light extraction efficiency of OLEDs has become a research hotspot. Total reflection will occur at the interface between the ITO film and the glass substrate and the interface between the glass substrate and the air, and the light emitted to the front of the OLED device to the external space accounts for about 20% of the total EL of the organic material film, and the remaining about 80% of the light It is mainly confined in organic material thin films, ITO thin films and glass substrates in the form of guided waves. It can be seen that ...

Claims

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