Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 19, Issue 22, Pages 3644-3649Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.200901274
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Funding
- Ministry of Knowledge Economy (MKE) [RT104-01-02]
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Highly efficient deep blue phosphorescent organic light-emitting diodes are developed using novel phenylcarbazole-based phosphine oxide host materials (PPO1 and PPO2). A deep blue phosphorescent dopant, tris((3,5- difluoro-4-cyanophenyl)pyridine) iridium, is doped into PPO1 and PPO2 at a doping concentration of 15% and a high quantum efficiency of 18.4% is obtained with color coordinates of (0.14, 0.15).
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