15 October 2012 Modeling of charge transport through thiophene nanowire
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Proceedings Volume 8549, 16th International Workshop on Physics of Semiconductor Devices; 85492Z (2012); doi: 10.1117/12.924148
Event: 16th International Workshop on Physics of Semiconductor Devices, 2011, Kanpur, India
Abstract
In the present work we have used a two probe model, consisting of sandwiched molecules wires, of thiophene, between platinum electrodes, to study the mechanism of charge transport, temperaturedependence, atomic configuration of electrodes, molecule-electrode contacts, as well as effect of rotation of molecular wire on the conductance. We find that for short length the charge transport is explained by tunnelling, and with increase in molecular length it changes hopping phenomena; which in turn supported by modeling the conductance of molecular wire with change in temperature for the system. Thus the results shows highly length dependent and temperature invariant behaviour in the short wires and weakly length dependent and temperature variant behaviour in the longer molecular wires. The geometric symmetries for the thiophene molecule lead to the difference of the contact configurations between the molecule and the electrodes, resulting in different conductance.
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V. K. Lamba, S. Engles, P. Yadav, S. Dhanda, "Modeling of charge transport through thiophene nanowire", Proc. SPIE 8549, 16th International Workshop on Physics of Semiconductor Devices, 85492Z (15 October 2012); doi: 10.1117/12.924148; http://dx.doi.org/10.1117/12.924148
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KEYWORDS
Molecules

Electrodes

Gold

Chemical species

Electronics

Molecular electronics

Nanowires

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