Title:
THERMALLY ACTIVATED DELAYED FLUORESCENCE MATERIAL, PREPARATION METHOD THEREFOR, AND ORGANIC LIGHT-EMITTING DIODE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/211124
Kind Code:
A1
Abstract:
The present invention relates to a thermally activated delayed fluorescence material, a preparation method therefor, and an organic light-emitting diode device. The structural general formula of the thermally activated delayed fluorescence material is shown by formula I, which is as follows: (I), wherein R represents a chemical group of an electron donor, X, Y, and Z are respectively one of (II), (III) and (IV), and X, Y and Z are the same or different. The thermally activated delayed fluorescence material of the present invention has an ultra-high reverse intersystem crossing rate and high light-emission efficiency, and is a TADF material with significant TADF characteristics. When the thermally activated delayed fluorescence material is used as a light-emitting layer object material and applied to the organic light-emitting diode device, the light-emission efficiency of the organic light-emitting diode device can be effectively improved, and the organic light-emitting diode device based on the thermally activated delayed fluorescence material of the present invention has very high device efficiency.
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Inventors:
LUO JIAJIA (CN)
YAN SHUXING (CN)
YAN SHUXING (CN)
Application Number:
PCT/CN2019/085617
Publication Date:
October 22, 2020
Filing Date:
May 06, 2019
Export Citation:
Assignee:
WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECH CO LTD (CN)
International Classes:
C07D219/02; C07D265/38; C07D279/22; C09K11/06; H01L51/50; H01L51/54
Domestic Patent References:
| WO2019044542A1 | 2019-03-07 | |||
| WO2019046759A1 | 2019-03-07 |
Foreign References:
| CN106206996A | 2016-12-07 | |||
| CN109411633A | 2019-03-01 | |||
| KR20190021845A | 2019-03-06 | |||
| JP2018127424A | 2018-08-16 |
Attorney, Agent or Firm:
COMIPS INTELLECTUAL PROPERTY OFFICE (CN)
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