Thermal activity delayed fluorescent organic compound using 2-cyanopyrazine as receptor, preparation and applications thereof

A technology of organic compounds and delayed fluorescence, which is applied in the fields of organic chemistry, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., and can solve problems such as spectrum being affected by solvent polarity, large excited state dipole moment, and device stability degradation , to achieve good industrial application prospects, good photoelectric performance, and reduce the effect of impact
CN110256409AActive Publication Date: 2019-09-20ZHEJIANG HONGWU TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG HONGWU TECH CO LTD
Publication Date
2019-09-20

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Abstract

The invention discloses a thermal activity delayed fluorescent organic compound using 2-cyanopyrazine as a receptor, preparation and applications thereof, wherein the structure of the thermal activity delayed fluorescent organic compound is represented by a general formula (1). According to the present invention, the compound as the light emitting layer material is used in organic electroluminescent devices based on TADF light-emitting mechanism, and the device produced from the compound has good photoelectric performance, and can meet the requirements of panel manufacturing enterprises.
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Description

technical field

[0001] The invention relates to the field of semiconductor technology, in particular to a thermally active delayed fluorescence compound with a small excited state dipole moment using 2-cyanopyrazine as an acceptor and its use as a light-emitting layer guest material in an organic electroluminescent device on the application. Background technique

[0002] The application of organic light-emitting diodes (OLEDs) in large-area flat-panel displays and lighting has attracted extensive attention from both industry and academia. However, traditional organic fluorescent materials can only use 25% of the singlet excitons formed by electrical excitation to emit light, and the internal quantum efficiency of the device is low (up to 25%). The external quantum efficiency is generally lower than 5%, which is still far from the efficiency of phosphorescent devices. Although phosphorescent materials enhance the intersystem crossing due to the strong spin-orbit coupling at...

Claims

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