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Relationship between host energy levels and device performances of phosphorescent organic light-emitting diodes with triplet mixed host emitting structure
- Source :
- Applied Physics Letters. 91:083511
- Publication Year :
- 2007
- Publisher :
- AIP Publishing, 2007.
-
Abstract
- Green phosphorescent organic light-emitting diodes (PHOLEDs) with a triplet mixed host emitting layer were developed and device performances were studied by changing host materials in light-emitting layer. Power efficiency of green PHOLEDs could be improved from 12.7to29.1lm∕W by using triplet mixed host emitting layer. Combination of hole-transport-type host with good hole injection properties and electron-transport-type host with good electron injection properties was effective to get high efficiency in triplet mixed host devices.
- Subjects :
- Materials science
Physics and Astronomy (miscellaneous)
business.industry
Astrophysics::High Energy Astrophysical Phenomena
law.invention
Organic semiconductor
law
OLED
Optoelectronics
Phosphorescent organic light-emitting diode
Astrophysics::Earth and Planetary Astrophysics
business
Phosphorescence
Layer (electronics)
Host (network)
Electrical efficiency
Diode
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 91
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........4b35a729436abcc359534bff2aa54756
- Full Text :
- https://doi.org/10.1063/1.2773941