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, surpassing DBTBN in suppressing efficiency roll-off. Its remarkably fast RISC and insensitivity to doping concentration enable unprecedented versatility in advanced OLED architectures. As a sensitizer in sensitized green-fluorescent OLEDs, it surpasses Ir-based complex sensitizers in reducing efficiency roll-off. As a blue emitter in bi-color white OLEDs, it effectively harnesses high-energy triplet excitons to minimize efficiency roll-off. DBSeBN thus expands the scope of MR-TADF materials across various kinds of OLED applications while suppressing efficiency roll-off.
Chen et al. (Fri,) studied this question.