Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Morphology Observation and Electrical Properties measuring of Self-Assembled Organic Monolayers on Au(111) Substrate Using Scanning Tunneling Microscopy

STM을 이용한 Au(111)기판에 자기조립화된 유기초박막의 모폴로지관찰 및 전기적특성 측정

  • Lee, Nam-Suk (Department of Electrical Eng, Dong-A University & CIIPMS) ;
  • Shin, Hoon-Kyu (Department of Electrical Eng, Dong-A University & CIIPMS) ;
  • Chang, Jeong-Soo (Department of Electrical Eng, Kyung-il University) ;
  • Kwon, Young-Soo (Department of Electrical Eng, Dong-A University & CIIPMS)
  • 이남석 (동아대학교 전기공학과 & CIIPMS) ;
  • 신훈규 (동아대학교 전기공학과 & CIIPMS) ;
  • 장정수 (경일대학교 전기공학과) ;
  • 권영수 (동아대학교 전기공학과 & CIIPMS)
  • Published : 2004.07.14
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Abstract

We attempt to investigate morphology of self-assembled dipyridinium dithioacetate on Au(111) substrate by Scanning Tunneling Microscopy(STM). Also, we measured electrical properties using Scanning Tunneling Spectroscopy(STS). Sample that use this experiment acquires thiol function beside quantity by dipyridinium dithioacetate, is structure that can be self-assembled easily to Au(111) substrate. The same self-assembly procedure was used for two different concentrations, 0.5mmol/ml and 1mmol/ml. Dilute density of sample by 0.5mmol/ml, 1mmol/ml and observed dipyridinium dithioacetate's image by STM after self-assembled on Au(111) substrate. The structure of Tip/SAMs/Au(111) has been used measurement for electrical properties(i-v) using STM. The current-voltage measurement result, observed negative differential resistance(NDR) properties.

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