한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)

한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

혼합된 정공 수송 층을 이용한 유기발광소자의 효율 및 수명 개선

Improved Efficiency and Lifetime for Organic Light-Emitting Devices Based on Mixed-Hole Transporting Layer

  • 서지현 (홍익대학교 정보디스플레이학과) ;
  • 박정현 (홍익대학교 정보디스플레이학과) ;
  • 김준호 (홍익대학교 전자공학과) ;
  • 김영관 (홍익대학교 정보디스플레이학과)
  • 발행 : 2006.06.22
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초록

Organic light-emitting devices (OLEDs) with the high efficiency and long lifetime are of growing interest in next-generation displays. Among the factors influencing OLEDs properties, one of unstable factor is $Alq_3$ cationic species caused by the excess holes resided in $Alq_3$ layer. Therefore, we suppressed the accumulation of excess holes by using the mixed-hole transporting layer (MHTL) of NPB and CBP in multilayer green OLEDs. The devices with MHTL showed improved characteristics in the luminance efficiency and lifetime. More characteristics and the carrier transport mechanism will be discussed.

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