한국정보디스플레이학회:학술대회논문집
- 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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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)
- 발행 : 2005.07.19
초록
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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