Electrical Transport Properties of Oligothiophene-Based Molecular Films Studied by Current Sensing Atomic Force Microscopy

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Hendriksen, Bas L.M. and Martin, Florent and Qi, Yabing and Mauldin, Clayton and Vukmirovic, Nenad and Ren, JunFeng and Wormeester, Herbert and Katan, Allard J. and Altoe, Virginia and Aloni, Shaul and Frechet, Jean M.J. and Wang, Lin-Wang and Salmeron, Miquel (2011) Electrical Transport Properties of Oligothiophene-Based Molecular Films Studied by Current Sensing Atomic Force Microscopy. Nano Letters, 11 (10). pp. 4107-4112. ISSN 1530-6984

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Abstract:Using conducting probe atomic force microscopy (CAFM) we have investigated the electrical conduction properties of monolayer films of a pentathiophene derivative on a SiO2/Si-p+ substrate. By a combination of current–voltage spectroscopy and current imaging we show that lateral charge transport takes place in the plane of the monolayer via hole injection into the highest occupied molecular orbitals of the pentathiophene unit. Our CAFM data suggest that the conductivity is anisotropic relative to the crystalline directions of the molecular lattice
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Copyright:© American Chemical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/80447
Official URL:http://dx.doi.org/10.1021/nl202720y
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