Temperature dependent current-voltage characteristics of zinc oxide nanowire/polypyrrole nanocomposite

Sameera, I and Bhatia, Ravi and Prasad, V and Menon, Reghu (2014) Temperature dependent current-voltage characteristics of zinc oxide nanowire/polypyrrole nanocomposite. In: APPLIED PHYSICS LETTERS, 105 (23).

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Abstract

Temperature dependent current-voltage (I-V) measurements of electrochemically prepared zinc oxide nanowire/polypyrrole (ZnONW/PPy) nanocomposite yielded non-linear I-V characteristics at temperatures between 300 and 4.5 K. The low-field conductance (G) of the ZnONW/PPy film exhibits pronounced temperature dependence with room temperature conductance (G(300K)) similar to 10(-3) S and a conductance ratio (G(300)K/G(4.5K)) of similar to 10(4), indicating dominance of significant temperature dependent charge transport processes. The conduction mechanism of the film is satisfactorily understood by extended fluctuation induced tunneling (FIT) model as the non-linear I-V characteristics fit fairly well to the extended FIT model. Further, the temperature dependence of G(o) obtained from fitting followed Sheng's model also. (C) 2014 AIP Publishing LLC.

Item Type:	Journal Article
Publication:	APPLIED PHYSICS LETTERS
Publisher:	AMER INST PHYSICS
Additional Information:	Copyright for this article belongs to the AMER INST PHYSICS, 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	21 Jan 2015 06:27
Last Modified:	21 Jan 2015 06:27
URI:	http://eprints.iisc.ac.in/id/eprint/50727

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