Triptycene-fused multi-resonance TADF material endows high-efficiency electroluminescence and low efficiency roll-off

In this work, a new triptycene-fused B,N-multiple resonance TADF material, namely TpBN, was designed and synthesized. It showed narrowband emission at 488 nm, a PLQY of 99% and an EQEmax of 27.0% with low efficiency roll-off, proving its potential for high-performance OLEDs.