한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

Polymeric hole-injection layer for high-efficiency and long-lifetime in organic light-emitting diodes

  • Choi, Mi-Ri (Dept. of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH)) ;
  • Han, Tae-Hee (Dept. of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH)) ;
  • Woo, Seong-Hoon (Dept. of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH)) ;
  • Lim, Kyung-Geun (Dept. of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH)) ;
  • Yun, Won-Min (Dept. of Chemical Engineering, Pohang University of Science and Technology (POSTECH)) ;
  • Kwon, Oh-Kwan (Dept. of Chemical Engineering, Pohang University of Science and Technology (POSTECH)) ;
  • Park, Chan-Eon (Dept. of Chemical Engineering, Pohang University of Science and Technology (POSTECH)) ;
  • Shin, Hoon-Kyu (National Center for Nanomaterials Technology) ;
  • Hur, Dal-Ho (Research Institute of Chemical & Electronic Materials, Cheil Industries INC) ;
  • Shin, Kyoung-Hwan (School of Chemical and Biological Engineering, Seoul National University) ;
  • Jang, Jyong-Sik (School of Chemical and Biological Engineering, Seoul National University) ;
  • Lee, Tae-Woo (Dept. of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH))
  • Published : 2009.10.12
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Abstract

We achieved high efficiency and long lifetime in small-molecule organic light-emitting diodes using a blend of polyaniline-based conducting polymer and a perfluorinated ionomer as a hole injection layer (HIL). The HIL formed by single spin coating greatly enhanced the surface work function and thus the hole injection from the anode, which resulted in great improvement in device luminous efficiency. We find that the solution processed HIL outperforms the conventional vacuum-deposited small molecule HIL in terms of the device performance.

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