Thermally activated delayed fluorescence of co-deposited copper(<scp>i</scp>) complexes: cost-effective emitters for highly efficient organic light-emitting diodes

Abstract

TADF copper(<sc>i</sc>) complexes were made by co-depositing carboline derivatives and copper iodide. δ-Carboline derivative-based OLEDs showed 6 times higher efficiency than α-carboline derivative-based ones.