The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
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Study on the Mophology Observation and Electrical Properties of Dipyridinium Organic Monolayer Using STM

STM을 이용한 Dipyridinium 유기 단분자막의 모폴로지 관찰 및 전기적 특성 연구

  • Published : 2005.02.01
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Abstract

In this work, the attempt has been made to investigate the morphology of self-assembled dipyridinium dithioacetate on Au(111) substrate by Scanning Tunneling Microscopy(STM). Also, we measured electrical properties(I-V) using Scanning Tunneling Spectroscopy(STS). Sample used in this experiment is dipyridinium dithioacetate, which contains thiol functional group, this structure that can be self-assembled easily to Au(111) substrate. The self-assembly procedure was used for two different concentrations, 0.5 mM/ml and 1 mM/ml. Dilute density of sample by 0.5 mM/ml, 1 mM/ml and observed dipyridinium dithioacetate's image by STM after self-assembled on Au(111) substrate. The structure of STM tip-SAMs-Au(111) substrate has been used measurement for electrical properties(I-V) using STS. The current-voltage(I-V) measurement result, observed negative differential resistance(NDR) properties.

Keywords

References

  1. A. Ulman, An Introduction to Ultrathin Organic films from Langmuir-Blodgett to Self-Assembly, Academic Press, Boston, 1991
  2. Y. S. Shan, T. R. Lee, 'A Steady-State Kinetic Model Can Be Used to Describe the Growth of Self-Assembled Monolayers(SAMs) on Gold', J. Phys. Chem. B., Vol. 104, pp. 8182-8191, 2000 https://doi.org/10.1021/jp000650p
  3. For comprehensive reference see, Scanning Probe Microscopy and Spectroscopy, Dawn A. Bonnell, VCH Publishers, Inc., New York, 1993
  4. G. Binnig, H. Rohrer, Ch. Gerber, and E. Weibel, 'Surface Studies by Scanning Tunneling Microscopy', Phys. Rev. Lett. Vol. 49, pp. 57-61, 1982 https://doi.org/10.1103/PhysRevLett.49.57
  5. 유승엽, 정상범, 박재철, 권영수, 'p-HP 고분자 LB초박막의 제작과 전기적 특성', 대한전기학회 논문지, 제 51C권, 7호, pp. 287-291, 2002
  6. F. F. Fan, Y. Yao, L. Cai, L. Cheng, J. M. Tour and A. J. Bard, 'Structure-Dependent Charge Transport and Storage in Self-Assembled Monolayers of Compounds of Interest in Molecular Electronics: Effects of Tip Material, Headgroup, and Surface Concentration', J. Am. Chem. Sco., Vol. 126, pp. 4035-4042. 2004 https://doi.org/10.1021/ja0359815
  7. J. Chen, W. Wang, and M. A. Reed, A. M. Rawlett, D. W. Price, and J. M. Tour, 'Room-temperature negative differential resistance in nanoscale molecular junctions' Appl. Phys. Lett., Vol. 77, pp. 1224-1226, 2000 https://doi.org/10.1063/1.1289650
  8. J. P. Sun, G. I. Haddad, P. Mazumder and J. N. Schulman, 'Resonant Tunneling Diodes: Models and Properties', Proceedings of the IEEE, Vol. 86, pp. 641-661, 1998 https://doi.org/10.1109/5.663541