High-Efficiency WOLEDs with High Color-Rendering Index based on a Chromaticity-Adjustable Yellow Thermally Activated Delayed Fluorescence Emitter.

Li, Xiang-Long; Xie, Gaozhan; Liu, Ming; Chen, Dongcheng; Cai, Xinyi; Peng, Junbiao; Cao, Yong; Su, Shi-Jian · Adv Mater · 2016

basic_science · Level V

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Abstract

A chromaticity-adjustable yellow thermally activated delayed fluorescence (TADF) material, PXZDSO2 as a triplet harvester provides a rational device concept, giving two-color and three-color pure organic white organic light-emitting diodes (WOLEDs) with unprecedented color-rendering index of 95 and external quantum efficiency of 19.2%.