한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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High-Performance Flexible Organic Light-Emitting Devices using Amorphous Indium Zinc Oxide Anode

  • Kang, Jae-Wook (Deptment of Materials Science & Engineering and OLED center, Seoul National Unversity, Surface Technology Research Center, Korea Institute of Materials Science (KIMS)) ;
  • Jeong, Won-Ik (Deptment of Materials Science & Engineering and OLED center, Seoul National Unversity) ;
  • Kim, Han-Ki (School of Advanced Materials and System Engineering, Kumoh National Institute of Technology) ;
  • Kim, Do-Geun (Surface Technology Research Center, Korea Institute of Materials Science (KIMS)) ;
  • Lee, Gun-Hwan (Surface Technology Research Center, Korea Institute of Materials Science (KIMS)) ;
  • Kim, Jang-Joo (Deptment of Materials Science & Engineering and OLED center, Seoul National Unversity)
  • Published : 2007.08.27
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Abstract

The amorphous IZO on flexible substrate (PC) shows similar electrical conductivity and optical transmittance with commercial ITO glass even though it was prepared at $<50\;^{\circ}C$. Moreover, it exhibits little resistance change during 5000 bending cycles, demonstrating good mechanical robustness. A green phosphorescent OLED fabricated on amorphous IZO on flexible PC shows maximum external quantum efficiency of ${\eta}_{ext}=13.7\;%$ and power efficiency of ${\eta}_p=32.7\;lm/W$, which are higher than a device fabricated on a commercial ITO on glass (${\eta}_{ext}=12.4%$ and ${\eta}_p=30.1\;lm/W$) and ITO on flexible PC (${\eta}_{ext}=8.5%$ and ${\eta}_p=14.1\;lm/W$).

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