Electrical transport study of phenylene-based π-conjugated molecules in a three-terminal geometry

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Lee, Jeong-O and Lientschnig, Günther and Wiertz, Frank G.M. and Struijk, Martin and Janssen, Rene A.J. and Egberink, Richard and Reinhoudt, David N. and Grimsdale, Andrew C. and Müllen, Klaus and Hadley, Peter and Dekker, Cees (2003) Electrical transport study of phenylene-based π-conjugated molecules in a three-terminal geometry. Annals of the New York Academy of Sciences, 1006 . pp. 122-133. ISSN 0077-8923

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Abstract:We fabricated three-terminal devices with conjugated molecules. Two different device layouts were used to measure both very short molecules (with one or two benzene rings) and relatively long ones (as long as 8 nm). To achieve an optimum gate effect, we used aluminum gates covered with a very thin native oxide layer. Molecules with thiol end groups were positioned between the source and drain electrodes by self-assembly. The device yield was low for short molecules, most likely due to defects in the self-assembled monolayers. Most of the devices made with short molecules did not show any gate effect at all; a small gate effect was only observed in two samples made with 1,3-benzenedithiol. Some devices showed clear negative differential conductance peaks. In some devices made with long molecules, we observed a small change of conductance with gate voltage.
Item Type:Article
Copyright:© 2003 Wiley
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Link to this item:http://purl.utwente.nl/publications/40899
Official URL:http://dx.doi.org/10.1196/annals.1292.008
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Metis ID: 215949