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논문 상세정보


We investigated the negative differential resistance (NDR) property of self-assembled 4,4-di(ethynylphenyl)-2'-nitro-l-(thioacetyl)benzene ('nitro-benzene'), which has been well known as a conducting molecule [1], Self-assembly monolayers (SAMs) were prepared on Au (111), which had been thermally deposited onto pre-treated $(H_2SO_4: H_2O_2=3:1)$ Si, The Au substrate was exposed to a 1mM solution of 1-dodecanethiol in ethanol for 24 hours to form a monolayer. After thorough rinsing of the sample, it was exposed to a $0.1{\mu}M$ solution of nitro-benzene in dimethylformamide (DMF) for 30 min and kept in the dark during immersion to avoid photo-oxidation. Following the assembly, the samples were removed from the solutions, rinsed thoroughly with methanol, acetone, and $CH_2Cl_2$, and finally blown dry with $N_2$. Under these conditions, we measured the electrical properties of SAMs using ultra high vacuum scanning tunneling microscopy (UHV-STM) and scanning tunneling spectroscopy (STS) [2]. As a result, we confirmed the properties of NDR in between the positive and negative region.

참고문헌 (13)

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  2. C. B. Gorman, R. L. Carroll, and R. R. Fuierer, 'Negative Differential Resistance in Patterned Electroactive Self-Assembled Monolayers', Langmuir, vol. 17, pp. 6923-6930, 2001 
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  6. Seung-Un Kim, Hoon-Kyu Shin and Young-Soo Kwon, 'Study on the negative differential resistance properties of self-assembled organic thin films by using STM', Colloids and Surfaces A: Physicochemical and Engineering Aspects, vol. 257-258, pp. 211-214, 2005 
  7. Nam-Suk Lee, Hoon-Kyu Shin and Young-Soo Kwon, 'A Study on the Negative Differential Resistance in Dipyridinium Self-Assembled Monolayers Using STM', KIEE International Transactions on Electrophysics and Applications, vol 5-C(3), pp. 111-114, 2005 
  8. P. Muller, S.F. Alvarado, L. Rossi and W. RieB, 'CHARGE-INJECTION SPECTROSCOPY AT THE ORGANIC/METAL INTERFACE', Mater. Phys. Mech., vol. 4, pp. 76-80, 2001 
  9. Seminario, J.M., Zacarias, A.G., Tour, J.M., 'Theoretical Study of a Molecular Resonant Tunneling Diode'. J. Am. Chem. Soc., vol. 122, pp. 3015-3020, 2000 
  10. 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. Soc., vol. 126, pp. 4035-4042, 2004 
  11. L. A. Bumm, J. J. Arnold, M. T. Cygan, T. D. Dunbar, T. P. Burgin, L. Jones II, D. L. Allara, J. M. Tour, P. S. weiss, 'Are Single Molecular Wires Conducting?', Science, vol. 271, pp. 1705-1707, 1996 
  12. C. Arena, B. Kleinsorge, J. Robertson, W. I. Milne, and M. E. Welland, 'Electronic properties of tetrahedral amorphous carbon investigated by scanning tunneling microscopy', J. Appl. Phys., vol. 85, pp. 1609-1615, 1999 
  13. Chen, J., Reed, M.A., Rawlett, A.M., Tour, J.M., 'Large on-off ratios and negative differential resistance in a molecular electronic device'. Science, vol. 286, pp. 1550-1552, 1999 

이 논문을 인용한 문헌 (1)

  1. 2009. "" Journal of electrical engineering & technology, 4(3): 418~422 


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