Triarylboron-based TADF emitters with perfluoro substituents: high-efficiency OLEDs with a power efficiency over 100 lm W⁻¹

Abstract

Triarylboron emitters with secondary perfluoro acceptors display strong thermally activated delayed fluorescence (TADF) with high PLQYs up to 100%. TADF-OLEDs with the emitters achieve a high EQE of 29.9%, as well as an ultrahigh PE of 123.9 lm W⁻¹.