Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 48, Issue 36, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/48/36/365106
Keywords
organic light-emitting diodes; white device; hybrid device; blue delayed fluorescence; yellow triplet emitter
Categories
Funding
- Development of Core Technologies for Organic Materials
- MOTIE
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High-efficiency hybrid white organic light-emitting diodes (HWOLEDs) with a blue thermally activated delayed fluorescent (TADF) emitter and a yellow phosphorescent emitter doped in a single emitting layer were developed. Exciton harvesting by the blue TADF and yellow phosphorescent emitters rendered both singlet and triplet excitons to contribute to the white emission, which leads to a high quantum efficiency of 22.4% and a power efficiency of 60.3 lm W-1 in the HWOLEDs. In addition, the electroluminescence spectra of the HWOLEDs were kept stable from 100 cd m(-2) to 5, 000 cd m(-2).
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