한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

Improved Efficiency of Organic Light-Emitting Diodes with Doped Transporting Layer

  • Seo, Ji-Hyun (Dept. of Information Display, Hongik Univ. Center for Organic Materials and Information Devices, Hongik Univ.) ;
  • Park, Jung-Hyun (Dept. of Information Display, Hongik Univ. Center for Organic Materials and Information Devices, Hongik Univ.) ;
  • Kim, Jun-Ho (Dept. of Electronic Engineering, Hongik Univ., Center for Organic Materials and Information Devices, Hongik Univ.) ;
  • Seo, Ji-Hoon (Dept. of Information Display, Hongik Univ. Center for Organic Materials and Information Devices, Hongik Univ.) ;
  • Hyung, Gun-Woo (Dept. of Materials Science and Engineering, Hongik Univ., Center for Organic Materials and Information Devices, Hongik Univ.) ;
  • Kim, Young-Kwan (Dept. of Information Display, Hongik Univ. Center for Organic Materials and Information Devices, Hongik Univ.)
  • Published : 2007.08.27
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Abstract

We demonstrate p-doped organic light emitting diodes (OLEDs) comprising tungsten oxide ($WO_3$) and 1,4-bis[N-(1-naphthyl)-N'-phenylamino]-4,4' diamine (NPB). We propose the NPB : $WO_3$ composition functions as a p-doping layer which significantly improves hole injection that leads to the fabrication of 4-(dicyano-methylene)-2-methyl-6-(p-dimethylaminos tyryl)-4H-pyrane (DCMl) based p-doped OLEDs with high efficiency and long lifetime.

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