Design strategy for 25% external quantum efficiency in green and blue thermally activated delayed fluorescent devices.

Lee, Dong Ryun; Kim, Mounggon; Jeon, Sang Kyu; Hwang, Seok-Ho; Lee, Chil Won; Lee, Jun Yeob · Adv Mater · 2015

basic_science · Level V

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Abstract

Carbazole- and triazine-derived thermally activated delayed fluorescent (TADF) emitters, with three donor units and an even distribution of the highest occupied molecular orbital, achieve high external quantum efficiencies of above 25% in blue and green TADF devices.