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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Electrical Characteristics of Self-Assembled Organic Thin Films Using Ultra-High Vacuum Scanning Tunneling Microscopy

UHV STM을 이용한 유기 초박막의 전기적 특성 연구

  • Kim, Seung-Un (Department of Electrical Engineering, Dong-A University) ;
  • Shin, Hoon-Kyu (Department of Electrical Engineering, Dong-A University) ;
  • Kwon, Young-Soo (Department of Electrical Engineering, Dong-A University)
  • Published : 2003.11.13
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Abstract

Currently, molecular devices are reported utilizing active self-assembled monolayers containing the nitro group as the active component, which has active redox centers[1]. We confirm the electrical properties of 4,4-di(ethynylphenyl)-2'-nitro-1-benzenethiolate. To deposit the SAM layer onto gold electrode, we transfer the prefabricated Au(111) substrates into a 1mM self-assembly molecules in THF solution. Au(111) substrates were prepared by ion beam sputtering method of gold onto the silicon wafer. As a result, we measured current-voltage curve using ultra high vacuum scanning tunneling microscopy (UHV STM), I-V curve also clearly shows several current peaks between the negative bias region (-0.3958V) and the positive bias region (0.4658V), respectively.

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