Boosting EQE to nearly 35% in acridone-based TADF materials via HOMO delocalization and nonradiation suppression

The coordinated rise of k RISC and PLQY was accomplished by extending HOMO distribution and eliminating the flexible group, which boost the PLQY of a blue TADF emitter up to 98.2% and the EQE of an OLED up to 34.4%.