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Two boron atoms versus one: high-performance deep-blue multi-resonance thermally activated delayed fluorescence
Chin-Yiu Chan1, Subeesh Madayanad Suresh2, Yi-Ting Lee1
1Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, Motooka, Nishi, Fukuoka 819-0395, Japan. chinyiu.chan@opera.kyushu-u.ac.jp.
Abstract:
Two new deep-blue narrowband multi-resonant emitters, 1B-DTACrs and 2B-DTACrs, one of which shows thermally activated delayed fluorescence (TADF), based on boron, nitrogen, and oxygen doped nanographenes are reported. Devices based on 2B-DTACrs showed an EQEmax of 14.8% and CIE coordinates of (0.150, 0.044), which are very close to the BT.2020 requirement for blue pixels.
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