Phenanthropyrimidine derivative and application in organic light emitting devices

Abstract

Disclosed is an organic compound which is represented by a general formula (I) shown in the description. Ar1 is selected from substituted or unsubstituted aryl groups of C6-C60. Ar2 is selected from substituted or unsubstituted aryl groups of C6-C60 and heteroaryl groups of C6-C30 containing pyridine groups. L1 and L2 are independently selected from a single bond and arylene groups of C6-C14. R1-R9 are independently selected from hydrogen, halogen, cyano, alkyl groups of C1-C112, substituted or unsubstituted aryl groups of C6-C30 and substituted or unsubstituted heteroaryl groups of C3-C30. When the aryl groups or the heteroaryl groups have substituents, the substituents are selected from alkyl groups of C1-C8 and aryl groups of C6-C30.

Description

technical field [0001] The invention relates to a new organic heterocyclic compound, in particular to a class of organic compounds containing phenanthropyrimidine groups and their derivatives, and their application in organic electroluminescent devices. Background technique [0002] At present, with the continuous advancement of OLED technology in the two fields of display and lighting, people pay more attention to the research of its core materials, and the industry has been committed to the development of new organic electroluminescent materials to further improve the luminous efficiency and life of the device. [0003] In general, common electron transport materials such as A1Q 3 The electron mobility of (octahydroxyquinoline aluminum) is much lower than the hole mobility of the hole transport material, so in the OLED device, on the one hand, it will lead to the imbalance of the injection and transport of the carriers caused by the holes and electrons. The recombination ...

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Problems solved by technology

[0003] In general, common electron transport materials such as A1Q 3 The electron mobility of (octahydroxyquinoline aluminum) is much lower than the hole mobility of the hole transport material, so in the OLED device, on the one hand, it will lead to the imbalance of the injection and transport of the carriers caused by the holes and electrons. The recombination probability of the device is reduced, thereby reducing the luminous efficiency of the device. On the other hand, the electron transport material with lower electron mobility will cause the operating voltage of the device to increase, thereby affecting the power efficiency.

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