한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제26권1호
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  • Pages.24-28
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  • 2009
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  • 1225-9098(pISSN)
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  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
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인광 발광 물질을 이용한 백색 유기 발광 다이오드에서의 혼합된 스페이서의 영향에 관한 연구

A Hybrid Spacer Effect on White Organic Light-Emitting Diodes with Phosphorescent Emitters

  • 서지훈 (홍익대학교 정보디스플레이공학과) ;
  • 박정선 (홍익대학교 정보디스플레이공학과) ;
  • 형건우 (홍익대학교 신소재공학과) ;
  • 서지현 (홍익대학교 정보디스플레이공학과) ;
  • 이금희 (성균관대학교 화학과) ;
  • 윤승수 (성균관대학교 화학과) ;
  • 김영관 (홍익대학교 정보디스플레이공학과)
  • 발행 : 2009.03.30
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 청색 인광 발광 물질인 bis(3,5-Difluoro-2-(2-pyridyl)phenyl-(2-carboxypyridyl) iridium (III) (Flrpic)과 녹색 인광 발광 물질인 fac-tris(2-phenypyridine) irdium(III) ($Ir(ppy)_3$)와 적색 인광 발광 물질인 his(5-benzoyl-2-phenylpyridinato-C,N)iridium(III) (acetylacetonate) ($(Bzppy)_{2}Ir(acac)$)를 각각 적층하여 백색 유기 발광 다이오드를 제작하였고, 각각의 발광층 사이에 혼합된 스페이서인 4,4'-N,N'-dicarbazole-biphenyl (CBP):4,7-diphenyl-1,10-phenanthroline (BPhen)을 적층하여 그 때의 영향에 대하여 연구하였다. 최적화된 구조에서의 전력 효율은 $0.014\;mA/cm^2$에서의 19.7 lm/w를 나타내었으며, $0.127\;mA/cm^2$에서의 11.5%의 외부 양자 효율을 나타내었고, 8 V에서 Commission Internationale do I'Eclairage ($CIE_{x,y}$) coordinates (x=0.36, y=0.44)의 색좌표를 나타내었다.

키워드

참고문헌

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