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Surface Modifications using Thiol Self-Assembled Monolayers on Au Electrodes in Organic Field Effect Transistors

Abstract

The influences of self-assembled-monolayers (SAMs) modifications on the gold electrodes in organic field effect transistors are studied using benzen-thiols (BzTs) having amino (NH2), nitro (NO2) and methyl (CH3) substituents and pentacene as an organic semiconductor. The field effect transistor (FET) characteristics are found to be very sensitive to the preparation condition of the SAMs modified surfaces. This can be rationalized in terms of the barriers against carrier injections made by SAMs and this situation can be monitored using a surface contact-angle method. The enhancement in the field effect mobilities μ is observed when the SAMs modifications to the electrodes are applied, and this could be caused by the higher efficiency of carrier injection attained by the hole transfer from SAMs to pentacene molecules.

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1. Jang, Yunseok et al., Appl. Phys. Lett. 87, 152105 (2005).
2. Hiroshiba, N. et al., Chem. Phys. Lett. 400, 235 (2004).
3. IH, Campbell et al., Phys. Rev. B 54, 14321 (1996).
4. Schreiber, Frank, Progress in Surface Science, 65, 151 (2000).
5. Kobayashi, S. et al., Nature Materials, 3, 317 (2004).
6. Iba, S. et al., Appl. Phys. Lett., 87, 023509 (2005).
7. G., Ashkenasy et al, Acc. Chem. Res., 35, 121 (2002).
8. Wang, J. et al., 41st Electronic Materials Conf. Dig., 16 (1999).
9. Kim, Seong Hyun et al., Japanese Journal of Applied Physics, 43, L60 (2004).
10. Ohashi, H. et al., Appl. Phys. Lett., 84, 520 (2004).
11. Ishii, H. et al., Adv. Mater., 11, 605 (1999).
12. Morikawa, Y. et al., Phys. Rev. B, 69, 041403 (2004).

Keywords

Surface Modifications using Thiol Self-Assembled Monolayers on Au Electrodes in Organic Field Effect Transistors

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