A diphenylphosphine oxide decorated multi-resonance TADF emitter for narrowband green electroluminescence with an EQE of 32.4%

被引：0

作者：

Dong, Junjie ^{[1
]}

Xu, Yulin ^{[1
]}

Wang, Shuni ^{[1
]}

Miao, Jingsheng ^{[1
]}

Li, Nengquan ^{[1
]}

Huang, Zhongyan ^{[1
]}

Yang, Chuluo ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen Key Lab New Informat Display & Storage Ma, Shenzhen 518055, Peoples R China

来源：

CHEMICAL COMMUNICATIONS | 2024年 / 60卷 / 53期

基金：

中国国家自然科学基金;

关键词：

EXTERNAL QUANTUM EFFICIENCY; PHOSPHINE OXIDE; FLUORESCENCE;

D O I：

10.1039/d4cc01672f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new narrowband thermally activated delayed fluorescence emitter, PhCzBN-PO, was developed by incorporating the diphenylphosphine oxide (DPPO) group into a multi-resonance core. The unique properties of DPPO enabled PhCzBN-PO to achieve pure green emission and a nonplanar structure. The resulting electroluminescent devices achieved high external quantum efficiencies up to 32.4% with extremely low efficiency roll-off and pure-green emission with Commission Internationale de L'Eclairage (CIE) coordinates of (0.24, 0.67). A multi-resonance TADF emitter with diphenylphosphine oxide decoration enables high-performance pure green OLEDs with external quantum efficiencies up to 32.4%.

引用

页码：6789 / 6792

页数：4