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Issue 34, 2016
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High-performance blue organic light-emitting diodes with 20% external electroluminescence quantum efficiency based on pyrimidine-containing thermally activated delayed fluorescence emitters

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Abstract

We report here high-performance pure blue thermally activated delayed fluorescence (TADF) molecules based on a central pyrimidine acceptor (A) core with peripheral diphenylacridan donor (D) units. A design motif of highly twisted D–A–D architectures having a small singlet–triplet energy splitting allows for the production of efficient pure blue TADF with high quantum efficiencies exceeding 90%. An OLED based on the blue pyrimidine-based TADF emitter exhibits a high maximum external quantum efficiency of 20.8% and a high power efficiency of 31.5 lm W−1.

Graphical abstract: High-performance blue organic light-emitting diodes with 20% external electroluminescence quantum efficiency based on pyrimidine-containing thermally activated delayed fluorescence emitters

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Supplementary files

Article information


Submitted
16 May 2016
Accepted
03 Jul 2016
First published
12 Jul 2016

J. Mater. Chem. C, 2016,4, 7911-7916
Article type
Communication

High-performance blue organic light-emitting diodes with 20% external electroluminescence quantum efficiency based on pyrimidine-containing thermally activated delayed fluorescence emitters

I. S. Park, J. Lee and T. Yasuda, J. Mater. Chem. C, 2016, 4, 7911
DOI: 10.1039/C6TC02027E

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