Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2007.06a
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- Pages.64-65
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- 2007
White Organic Light-emitting Diodes using red and blue phosphorescent materials
적색과 청색 인광 소재를 이용한 백색 유기 발광 소자에 관한 연구
- Park, Jung-Hyun (Hongik Univ., Center for Organic Materials & Information Devices) ;
- Choi, Hak-Bum (Hongik Univ., Center for Organic Materials & Information Devices) ;
- Kim, Gu-Young (Hongik Univ., Center for Organic Materials & Information Devices) ;
- Lee, Seok-Jae (Hongik Univ., Center for Organic Materials & Information Devices) ;
- Seo, Ji-Hyun (Hongik Univ., Center for Organic Materials & Information Devices) ;
- Seo, Ji-Hoon (Hongik Univ., Center for Organic Materials & Information Devices) ;
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Kim, Young-Kwan
(Hongik Univ., Center for Organic Materials & Information Devices)
- 박정현 (홍익대학교 유기 소재 및 정보소자 센터) ;
- 최학범 (홍익대학교 유기 소재 및 정보소자 센터) ;
- 김구영 (홍익대학교 유기 소재 및 정보소자 센터) ;
- 이석재 (홍익대학교 유기 소재 및 정보소자 센터) ;
- 서지현 (홍익대학교 유기 소재 및 정보소자 센터) ;
- 서지훈 (홍익대학교 유기 소재 및 정보소자 센터) ;
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김영관
(홍익대학교 유기 소재 및 정보소자 센터)
- Published : 2007.06.21
Abstract
High-efficiency white organic light-emitting diodes (WOLEDs) were fabricated with two emissive layers and exciton blocking layer was sandwiched between two phosphorescent dyes which were, bis(3,5-Difluoro-2-(2-pyridyl)phenyl-(2-carboxypyridyl) iridium III (Flrpic) as blue emission and a newly synthesized red phosphorescent material guest, Bis(5-benzoyl-2-phenylpyridinato-C,N)iridium(III) (acetylacetonate) ((Bzppy)2Ir(III)acac). This exciton blocking layer prevents a triple-triple energy transfer between the two phosphorescent emissive layers with balanced emission of blue and red. The white device showed the Commission Internationale d'Eclairage (CIEx,y) coordinates of (0.34, 0.40) at the maximum luminance of