Silicon-Molecules-Metal Junctions by Transfer Printing: Chemical Synthesis and Electrical Properties
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- 作者：D. Guerin ; C. Merckling ; S. Lenfant ; X. Wallart ; S. Pleutin ; D. Vuillaume
- 刊名：Journal of Physical Chemistry C
- 出版年：2007
- 出版时间：June 7, 2007
- 年：2007
- 卷：111
- 期：22
- 页码：7947 - 7956
- 全文大小：462K
- 年卷期：v.111,no.22(June 7, 2007)
- ISSN：1932-7455
文摘
Gold electrodes have been deposited by transfer printing (TP) on a thiol-functionalized self-assembledmonolayer (SAM) on silicon substrate. A sequential chemical route is reported to incorporate thiol groups(-SH) on a preformed long alkyl chain SAM on silicon. The structural characterizations of the functionalizedsurfaces are described and confirm success of each chemical step (overall yield of 20%). The electricalmeasurements of the silicon-molecules-gold TP junctions are compared with junctions made by a classicalvacuum evaporation of gold. The temperature-dependent electrical measurements show that the silicon/alkyl/Au TP junctions exhibit a purely temperature-independent tunnel behavior, while a slight temperature-dependentbehavior is observed at a low bias (
V < 0.5 V) for the junctions with evaporated Au electrodes. Admittancespectroscopy measurements confirm the better dielectric behavior of TP junctions.
V < 0.5 V) for the junctions with evaporated Au electrodes. Admittancespectroscopy measurements confirm the better dielectric behavior of TP junctions.