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Conduction mechanisms in P(VDF-TrFE)/gold nanowire composites: tunnelling and thermally-activated hopping process near the percolation threshold

Ramachandran, Laavanya and Lonjon, Antoine and Demont, Philippe and Dantras, Eric and Lacabanne, Colette Conduction mechanisms in P(VDF-TrFE)/gold nanowire composites: tunnelling and thermally-activated hopping process near the percolation threshold. (2016) Materials Research Express, 3 (8). 085027. ISSN 2053-1591

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Official URL: http://dx.doi.org/10.1088/2053-1591/3/8/085027

Abstract

High-aspect ratio gold nanowires were dispersed in a P(VDF-TrFE) matrix to form conducting polymer composites. The composites were found to follow a percolation law, with a low percolation threshold of 2.2%vol and attaining a conductivity value of 100 Sm−1. The temperature and frequency dependence of the composites were studied using broadband dielectric spectroscopy. Tunnelling was found to be the main charge transport mechanism at temperatures below−100 °Cand a thermallyactivated hopping mechanism was determined to be responsible for conduction at temperatures above−100 °C. The correlated barrier hopping model was found to be the best fit to explain the conduction mechanisms in the composites.found to be the best fit to explain the conduction mechanisms in the composites.

Item Type:Article
Additional Information:Thanks to IOP Publishing. The definitive version is available at http://iopscience.iop.org/ The original PDF of the article can be found at http://iopscience.iop.org/article/10.1088/2053-1591/3/8/085027
HAL Id:hal-01471564
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:20 Feb 2017 09:17

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