Organic compound and organic photoelectric element containing organic compound

Abstract

The invention belongs to the field of organic photoelectricity, and particularly relates to an organic compound and an organic photoelectric element containing the organic compound, in particular to an organic light-emitting diode. The structure of the organic compounds is shown in the formula (I). The organic compound group shown in the formula (I) has a remarkable characteristic that the difference value between the singlet state energy level S1 and the triplet state energy level T1 of the organic compounds is smaller than or equal to 0.35 electron volt. Detailed description information and the organic photoelectric element thereof can be understood by referring to the specific description provided by the invention. The organic compound provided by the invention has the characteristic of thermal activation delayed fluorescence, can improve the utilization efficiency of triplet excitons when being applied to an organic electroluminescent diode, and particularly can improve the current efficiency, reduce the driving voltage and obviously prolong the service life of a light-emitting element when being used as a functional layer of the light-emitting element, and good commercialization prospects are realized.

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 electroluminescence 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 rap...

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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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