Asymmetric strategy based on 5H-benzofuro[3,2-c]carbazole enables efficient narrowband multi-resonance thermally activated delayed fluorescence emitters

作者：Song, Xiangan; Shen, Shaogang; Zou, Shengnan; Guo, Fengyun; Gao, Shiyong; Wang, Ying^*; Zhang, Yong^*

来源：Journal of Materials Chemistry C, 2023, 11(48): 16928-16932.

DOI：10.1039/d3tc02902f

• LIGHT-EMITTING-DIODES

Herein, 5H-benzofuro[3,2-c]carbazole (BFCz) was introduced into a multi-resonance skeleton to develop two asymmetric emitters, BFCz-B-Cz and BFCz-B-O, which exhibit narrowband green and blue emissions and enhanced reverse intersystem crossing rates. The corresponding pure green and blue OLEDs exhibit high external quantum efficiencies of 26.0% and 11.0%, respectively.

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