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
收藏
页码：6789 / 6792
页数：4
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