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Organic compound based on carbazole as core and application of organic compound in OLED

An organic compound and carbazole technology, applied in the field of organic compounds and its application in OLED, can solve the problems of complex manufacturing process and affecting the angular distribution of OLED radiation spectrum

Active Publication Date: 2021-02-02
JIANGSU SUNERA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The first two structures will affect the angular distribution of the radiation spectrum of the OLED. The third structure is complicated to manufacture, but the process of using the surface covering layer is simple, and the luminous efficiency can be increased by more than 30%, which is particularly concerned by people.

Method used

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  • Organic compound based on carbazole as core and application of organic compound in OLED
  • Organic compound based on carbazole as core and application of organic compound in OLED
  • Organic compound based on carbazole as core and application of organic compound in OLED

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Embodiment 1

[0054] Embodiment 1: the synthesis of compound 8:

[0055]

[0056] Under nitrogen atmosphere, add 0.01mol raw material I-1, 0.025mol raw material II-1, 0.03mol sodium tert-butoxide, 5×10 -5 mol Pd 2 (dba) 3 and 5×10 -5 mol of tri-tert-butylphosphine, then add 150ml of toluene to dissolve it, heat to 100°C, reflux for 24 hours, observe the reaction by TLC until the reaction is complete. Naturally cooled to room temperature, filtered, and the filtrate was rotary evaporated until there was no fraction. The resulting material was purified by silica gel column (petroleum ether as eluent) to obtain Intermediate A-1;

[0057] In a 250ml three-neck flask, under the protection of nitrogen, add 0.01mol intermediate A-1, 0.015mol raw material III-1, 150ml toluene and stir to mix, then add 5×10 -5 mol Pd 2 (dba) 3 , 5×10 -5 mol P(t-Bu) 3 , 0.03mol sodium tert-butoxide, heated to 110 ° C, reflux for 24 hours, using TLC to observe the reaction until the reaction is complete. N...

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Abstract

The invention discloses an organic compound based on carbazole as a core and an application of the organic compound in an OLED. The compound takes carbazole as the core, a nitrogen atom of carbazole is connected with benzoxazole, benzene rings on the two sides are substituted by heteroaryl at the same time, and the compound has high glass transition temperature and thermal stability. The evaporation temperature of the material is low, and the decomposition temperature of the material is higher than the evaporation temperature of the material. The material has a low extinction coefficient and ahigh refractive index in the field of visible light, and can effectively improve the light extraction efficiency of an OLED device after being applied to the OLED device as a covering layer, therebyimproving the light emitting efficiency of the device and reducing the power consumption of the device.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to a carbazole-based organic compound and its application in OLEDs. Background technique [0002] Currently, OLED display technology has been applied in smart phones, tablet computers and other fields, and will further expand to large-size applications such as TVs. However, 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 org...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D413/14C07D417/14C07D519/00H01L51/52H01L51/54
CPCC07D413/14C07D417/14C07D519/00H10K85/657H10K85/6572H10K85/6574H10K85/6576H10K50/85Y02E10/549
Inventor 陆颖叶中华吴秀芹张兆超
Owner JIANGSU SUNERA TECH CO LTD
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