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Simplified Bilayer White Phosphorescent Organic Light-Emitting Diodes.
- Source :
- ETRI Journal; Apr2016, Vol. 38 Issue 2, p260-264, 5p
- Publication Year :
- 2016
-
Abstract
- We report on highly efficient blue, orange, and white phosphorescent organic light-emitting diodes consisting only two organic layers. Hole transporting 4, 4,' 4''-tris (N-carbazolyl)triphenylamine (TcTa) and electron transporting 2-(diphenylphosphoryl) spirofluorene (SPPO1) are used as an emitting host for orange light-emitting bis(3-benzothiazol-2-yl-9-ethyl-9H-carbazolato) (acetoacetonate) iridium ((btc)2(acac)Ir) and blue light-emitting iridium(III)bis(4,6-difluorophenyl-pyridinato-N,C2') picolinate (FIrpic) dopant, respectively. Combining these two orange and blue light-emitting layers, we successfully demonstrate highly efficient white PHOLEDs while maintaining Commission internationale de l'éclairage coordinates of (x = 0.373, y = 0.443). Accordingly, we achieve a maximum external quantum, current, and power efficiencies of 12.9%, 30.3 cd/A, and 30.0 lm/W without out-coupling enhancement. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 12256463
- Volume :
- 38
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- ETRI Journal
- Publication Type :
- Academic Journal
- Accession number :
- 114510185
- Full Text :
- https://doi.org/10.4218/etrij.16.2515.0011