An organic compound and an organic photoelectric element containing it

Abstract

The invention belongs to the field of organic optoelectronics, and specifically relates to an organic compound and an organic optoelectronic element comprising it, especially an organic electroluminescent diode, wherein the structure of the organic compound is shown in formula (I): the organic compound represented by formula (I) A remarkable feature of the group is that the difference between their singlet energy level S1 and triplet energy level T1 is ≤0.35 eV, detailed information and their organic optoelectronic components can be understood by referring to the specific description provided herein. The organic compound of the present invention has thermally activated delayed fluorescence characteristics, and can be used in organic electroluminescent diodes to improve the utilization efficiency of triplet excitons. Specifically, using the compound of the present invention as a functional layer of a light-emitting element can make the current of the light-emitting element The efficiency is improved, the driving voltage is reduced, and the service life is obviously extended, which has a good commercialization prospect.

Description

technical field [0001] The invention belongs to the field of organic optoelectronics, and in particular relates to an organic compound and an organic optoelectronic element containing it, in particular to an organic electroluminescent diode. Background technique [0002] Organic electroluminescent devices (OLEDs) have the advantages of wide viewing angle, fast response speed, high color quality, and flexible light emission, and have broad application prospects. A high-efficiency and long-lived organic electroluminescent device is usually the result of an optimized match between the device structure and various organic materials. Common OLED devices generally include the following types of organic materials: hole injection materials, hole transport materials, electron transport materials, and various colors of light emitting materials (dye or doped guest materials) and corresponding host materials. Although the research of organic electroluminescence is progressing very rapi...

AI Technical Summary

Problems solved by technology

Although the research of organic electroluminescence is progressing very rapidly, there are still many problems to be solved, such as the improvement of efficiency, the design and synthesis of new materials with higher color purity; the design of host-guest materials with high triplet exciton utilization and synthesis etc.

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