Deep-blue thermally activated delayed fluorescence materials with high glass transition temperature

被引：13

作者：

Zhu, Xiang-Dong ^{[1
]}

Tian, Qi-Sheng ^{[1
]}

Zheng, Qi ^{[1
]}

Wang, Ya-Kun ^{[1
]}

Yuan, Yi ^{[1
]}

Li, Yun ^{[1
]}

Jiang, Zuo-Quan ^{[1
]}

Liao, Liang-Sheng ^{[1
]}

机构：

[1] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Joint Int Res Lab Carbon Based Funct Mat & Device, Suzhou, Jiangsu, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2019年 / 206卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Deep-blue emission; Thermally activated delayed fluorescence; Spiro-type material; High thermal stability; Organic light-emitting diodes; Small singlet-triplet splitting; LIGHT-EMITTING-DIODES; HIGH-EFFICIENCY; MOLECULAR DESIGN; HOST MATERIALS; PHOSPHORESCENT; EMITTERS; DERIVATIVES; DONOR; TADF; SUBSTITUTION;

D O I：

10.1016/j.jlumin.2018.10.017

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Two thermally activated delayed fluorescence (TADF) deep-blue emitters (4-SCZ, 4-SCZ-F) were developed by combining a novel spiro-type donor moiety with different triazine-based unit. By modifying the interplay between the donors and acceptor through tuning the phenylene linker using a fluorine substituent, singlet-triplet splitting (Delta E-ST) can be regulated. In addition, the rigid geometry of these emitters also ensures their high photoluminance quantum yield (PLQY). As a result, when applied 4-SCZ-F as the emitter, good performance with current efficiency (CE)/power efficiency (PE)/external quantum efficiency (EQE) of 11.16 cd/A/9.74 lm/W/7.21% and Commission Internationale de l'Eclairage (CIE) coordinate at (0.16, 0.17) was achieved.

引用

页码：146 / 153

页数：8

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