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

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Characteristics of flexible IZO/Ag/IZO anode on PC substrate for flexible organic light emitting diodes

PC 기판위에 성막한 IZO/Ag/IZO 박막의 특성과 이를 이용하여 제작한 플렉시블 유기발광다이오드의 특성 분석

  • Cho, Sung-Woo (Dept. of Information and Nano Materials Engineering, Kumoh National Institute of Technology (KIT)) ;
  • Jeong, Jin-A (Dept. of Information and Nano Materials Engineering, Kumoh National Institute of Technology (KIT)) ;
  • Bae, Jung-Hyeok (Dept. of Information and Nano Materials Engineering, Kumoh National Institute of Technology (KIT)) ;
  • Moon, Jong-Min (Dept. of Information and Nano Materials Engineering, Kumoh National Institute of Technology (KIT)) ;
  • Choi, Kwang-Hyuk (Dept. of Information and Nano Materials Engineering, Kumoh National Institute of Technology (KIT)) ;
  • Kim, Han-Ki (Dept. of Information and Nano Materials Engineering, Kumoh National Institute of Technology (KIT))
  • 조성우 (국립금오공과대학교, 정보나노소재공학과) ;
  • 정진아 (국립금오공과대학교, 정보나노소재공학과) ;
  • 배정혁 (국립금오공과대학교, 정보나노소재공학과) ;
  • 문종민 (국립금오공과대학교, 정보나노소재공학과) ;
  • 최광혁 (국립금오공과대학교, 정보나노소재공학과) ;
  • 김한기 (국립금오공과대학교, 정보나노소재공학과)
  • Published : 2007.06.21
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Abstract

IZO/Ag/IZO (IAI) anode films for flexible organic light emitting diodes (OLEDs) were grown on PC (polycarbonate) substrate using DC sputter (IZO) and thermal evaporator (Ag) systems as a function of Ag thickness. To investigate electrical and optical properties of IAI stacked films, 4-point probe and UV/Vis spectrometer were used, respectively. From a IAI stacked film with 12nm-thick Ag, sheet resistance of $6.9\;{\Omega}/{\square}$ and transmittance of above 82 % at a range of 500-550 nm wavelength were obtained. In addition, structural and surface properties of IAI stacked films were analyzed by XRD (X-ray diffraction) and SEM (scanning electron microscopy), respectively. Moreover, IAI stacked films showed dramatically improved mechanical properties when subjected to bending both as a function of number of cycles to a fixed radius. Finally, OLEDs fabricated on both flexible IAI stacked anode and conventional ITO/Glass were fabricated and, J-V-L characteristics of those OLEDs were compared by Keithley 2400.

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