Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Study on Efficiency improvement of OLEDs by surface treatment of $UV/O_3$

$UV/O_3$ 표면처리에 따른 OLEDs 효율 향상에 관한 연구

  • Jang, Yoon-Ki (Department of Electrical Engineering&CIIPMS, Dong-A University) ;
  • Kim, Byoung-Sang (Department of Electrical Engineering&CIIPMS, Dong-A University) ;
  • Kwon, Oh-Kwan (Department of Electrical Engineering&CIIPMS, Dong-A University) ;
  • Kwon, Young-Soo (Department of Electrical Engineering&CIIPMS, Dong-A University)
  • 장윤기 (동아대 전기공학과 & CIIMPS) ;
  • 김병상 (동아대 전기공학과 & CIIMPS) ;
  • 권오관 (동아대 전기공학과 & CIIMPS) ;
  • 권영수 (동아대 전기공학과 & CIIMPS)
  • Published : 2005.11.04
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Abstract

Main purpose of this study is a improved efficiency of Organic light emitting diodes(OLEDs) concerning $UV/O_3$ treatment. We investigated the efficiency of OLEDs by $UV/O_3$ treatment of ITO surface. We measured current density-voltage, luminance-voltage characteristics in different $UV/O_3$ treatment time and observed ITO surface roughness by using AFM(Atomic Force Microscope). The fundamental structure of the OLEDs was $ITO/NPB/Alq_3/LiF/Al$. We performed $UV/O_3$ treatment and found that $UV/O_3$ treatment enhanced the performance of OLEDs. We also found that change of surface roughness according to difference time a $UV/O_3$ treatment

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