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Improved performance of blue phosphorescent organic light-emitting diodes with a mixed host system.
- Source :
-
Applied Physics Letters . 12/21/2009, Vol. 95 Issue 25, p253304. 3p. 1 Diagram, 3 Graphs. - Publication Year :
- 2009
-
Abstract
- We have investigated a relationship between device performances and host properties in the emissive layer (EML) of iridium(III) bis(4′,6′-difluorophenylpyridinato)tetrakis(1-pyrazolyl)borate doped blue phosphorescent organic light-emitting diodes (PHOLEDs). We found that the recombination zone as well as charge carrier injection properties of the EML could be systematically engineered through a mixed host system. Therefore, light-emitting performances of blue PHOLEDs were greatly improved with external quantum and power efficiencies of 20.5% and 43.5 lm/W at a luminance of 56 cd/m2, respectively. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 95
- Issue :
- 25
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 47132864
- Full Text :
- https://doi.org/10.1063/1.3276075