Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A Study on Space Charge of Organic Pentacene/metal Interface

유기물 Pentacene 박막과 금속 계면에서의 Space Charge 연구

  • 윤영운 (서강대학교 물리학과 바이오융합협동과정) ;
  • ;
  • 이후능 (서강대학교 물리학과 바이오융합협동과정) ;
  • 김송희 (서강대학교 물리학과 바이오융합협동과정) ;
  • 이기진 (서강대학교 물리학과 바이오융합협동과정)
  • Published : 2007.01.01
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Abstract

Surface potential properties at the interface of pentacene thin films on gold (Au) and aluminum (Al) surfaces were investigated by using a near-field scanning microwave microprobe (NSMM). The surface potential formed across the pentacene film was observed by measuring the microwave reflection coefficient $S_{11}$ and compared with the result of a Kelvin-probe method. The obtained reflection coefficient ${\Delta}S_{11}$ of the pentacene thin films on Al was decreased as the pentacene film thickness increased due to the increased accumulation of negative space charges, while for Au ${\Delta}S_{11}$ was essentially constant.

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References

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