4.8 Article

High-Efficiency Blue Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence from Phenoxaphosphine and Phenoxathiin Derivatives

Journal

ADVANCED MATERIALS
Volume 28, Issue 23, Pages 4626-4631

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201506391

Keywords

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Funding

  1. ACCEL project from Japan Science and Technology Agency (JST)
  2. Japan Society for the Promotion of Science (JSPS) [15H01049, 25708032, 26620168]
  3. Cooperative Research Program of Network Joint Research Center for Materials and Devices
  4. Ogasawara Foundation for the Promotion of Science and Engineering
  5. Kurata Memorial Hitachi Science and Technology Foundation
  6. Grants-in-Aid for Scientific Research [15H01049, 25708032, 26620168] Funding Source: KAKEN

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High-efficiency blue thermally activated delayed fluorescence (TADF) molecules, consisting of phenoxaphosphine oxide and phenoxathiin dioxide as acceptor units and 9,9-dimethylacridan as a donor unit, are reported. Maximum external electroluminescence quantum efficiencies of up to 20.5% are achieved in blue organic light-emitting diodes (OLEDs) by employing these materials as TADF emitters.

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