한국정보디스플레이학회:학술대회논문집
- 2005.07b
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- Pages.1381-1382
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- 2005
Improvement of electroluminescent efficiency by using interfacial exciton blocking layer in blue emitting electrophosphorescent organic light emitting diodes
- Kim, Ji-Whan (School of Materials Sciences and Engineering, Seoul National University) ;
- Kim, Joo-Hyun (Department of Chemistry, College of Natural Sciences, Seoul National University) ;
- Yoon, Do-Yeung (Department of Chemistry, College of Natural Sciences, Seoul National University) ;
- Kim, Jang-Joo (Department of Chemistry, College of Natural Sciences, Seoul National University)
- Published : 2005.07.19
Abstract
We report improved efficiency in blue electrophosphorescent organic light emitting diodes by introducing an interfacial exciton blocking layer between light emitting layer (EML) and hole transport layer (HTL). Iridium(III) bis [(4,6-di-fluorophenyl)- pyridinato -N,C2']picolinate (FIrpic) was used as blue phosphorescent dopant and JHK6-3 with carbazole and electron transporting group as host and also as the interfacial layer, resulting in drastic increase in quantum efficiency.
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