Issue 34, 2015

High efficiency blue fluorescent organic light-emitting diodes using a conventional blue fluorescent emitter

Abstract

High efficiency blue fluorescent organic light-emitting diodes (OLEDs) were developed by doping the conventional 2,5,8,11-tetra-tert-butylperylene (TBPe) blue fluorescent dopant in a mixed emitting layer of a wide bandgap host and a blue thermally activated delayed fluorescent emitter which played the role of a sensitizer in blue fluorescence emission. 10-(4-((4-(9H-Carbazol-9-yl)phenyl)sulfonyl)phenyl)-9,9-dimethyl-9,10-dihydroacridine (CzAcSF) was the blue thermally activated delayed fluorescent emitter of the emitting layer and bis[2-(diphenylphosphino)phenyl]ether oxide (DPEPO) was the host material of the emitting layer. Doping of TBPe at a doping concentration of 0.1% in an emitting layer of DPEPO:CzAcSF achieved a high quantum efficiency of 18.1% in the blue fluorescent OLEDs, which is the best quantum efficiency reported in blue fluorescent OLEDs.

Graphical abstract: High efficiency blue fluorescent organic light-emitting diodes using a conventional blue fluorescent emitter

Article information

Article type
Paper
Submitted
03 Jun 2015
Accepted
21 Jul 2015
First published
04 Aug 2015

J. Mater. Chem. C, 2015,3, 8834-8838

High efficiency blue fluorescent organic light-emitting diodes using a conventional blue fluorescent emitter

I. H. Lee, W. Song, J. Y. Lee and S. Hwang, J. Mater. Chem. C, 2015, 3, 8834 DOI: 10.1039/C5TC01626F

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