Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 19, Pages 5739-5744Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201600113
Keywords
charge transfer; electroluminescence; exciplexes; fluorescence; organic light-emitting diodes
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Funding
- Polish Ministry of Science and Higher Education Mobility Plus project [932/MOB/2012]
- Open Partnership Joint Projects of JSPS (Japan Society for the Promotion of Science) Bilateral Joint Research Projects
- project TADFORCE [H2020-MSCA-IF-2014/659288]
- EPSRC [EP/K016164/1, EP/L02621X/1] Funding Source: UKRI
- Grants-in-Aid for Scientific Research [15H00997] Funding Source: KAKEN
- Engineering and Physical Sciences Research Council [EP/K016164/1, EP/L02621X/1] Funding Source: researchfish
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A new family of thermally activated delayed fluorescence (TADF) emitters based on U-shaped D-A-D architecture with a novel accepting unit has been developed. All investigated compounds have small singlet-triplet energy splitting (E-ST) ranging from 0.02 to 0.20eV and showed efficient TADF properties. The lowest triplet state of the acceptor unit plays the key role in the TADF mechanism. OLEDs fabricated with these TADF emitters achieved excellent efficiencies up to 16% external quantum efficiency (EQE).
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