The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Effects of Oxygen Plasma Treatment on the Electrical Properties of Organic Photovoltaic Cells

유기 광기전 소자의 전기적 특성에 미치는 산소 플라즈마 처리의 영향

  • 오동훈 (광운대 전자정보공과대 전기공학과) ;
  • 이영상 (광운대 전자정보공과대 전기공학과) ;
  • 박희두 (강원대 방재전문대학원) ;
  • 신종열 (삼육대 카메카트로닉스학과) ;
  • 김태완 (홍익대 기초과학과) ;
  • 홍진웅 (광운대 전기공학과)
  • Received : 2011.09.21
  • Accepted : 2011.10.28
  • Published : 2011.12.01
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Abstract

An indium-tin-oxide (ITO) is normally used as a substrate in organic photovoltaic cells. We examined the effects of an oxygen ($O_2$) plasma treatment on the electrical properties of an organic photovoltaic cell. Experiments with four-point probe method and atomic force microscope revealed the lowest surface resistance of 17.64 ${\Omega}$/sq and the lowest average surface roughness of 1.39 nm at the plasma treatment power of 250 W. A device structure of ITO/CuPc/$C_{60}$/BCP/$Cs_2CO_3$/Al was fabricated by thermal evaporation with and without the plasma treated ITO substrate. It was found that the power conversion efficiency of the cell with the plasma treated ITO is 65 % higher than the one without the plasma treated ITO.

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References

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