Efficient narrowband green OLEDs with TADF sensitizers combining multiple charge-transfer pathways

Benefitting from the concurrent intramolecular TBCT and TSCT of ortho -linked TADF materials, high k F and k RISC are achieved simultaneously and the devices using o -DCz-TRZ and BN-DMAc as emitters achieved high EQEs of 20.3% and 24.2%.