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Eliminating the Reverse ISC Bottleneck of TADF Through Excited State Engineering and Environment‐Tuning Toward State Resonance Leading to Mono‐Exponential Sub‐µs Decay. High OLED External Quantum Efficiency Confirms Efficient Exciton Harvesting

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Yersin, Hartmut ; Czerwieniec, Rafal ; Mataranga‐Popa, Larisa ; Mewes, Jan‐Michael ; Cheng, Gang ; Che, Chi‐Ming ; Saigo, Masaki ; Kimura, Shuji ; Miyata, Kiyoshi ; Onda, Ken
Date of publication of this fulltext: 30 Aug 2022 05:59

This publication is part of the DEAL contract with Wiley.


The electronic structure and photophysics of the recently designed organic direct singlet harvesting (DSH) molecule are explored, in which donor (D) and acceptor (A) are held at distance by two bridges. One of the bridges is functionalized with fluorene. This structure leads to an ultrasmall singlet-triplet energy gap of increment E (S-1-T-1) approximate to 10 cm(-1) (approximate to 1 meV) ...


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