Nonlinear Transport in Hybrid Polypyrrole–Gold Nanostructures

Authors: Mtsuko, Davie; Ahlskog, Markus; Menon, Reghu

Source: Journal of Nanoscience and Nanotechnology, Volume 10, Number 12, December 2010 , pp. 8185-8190(6)

Publisher: American Scientific Publishers

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Abstract:

We have studied charge transport in nanometer scale films of polypyrrole (PPy) that were grown electrochemically onto discontinuous ultrathin films of gold. The gold films consisted of 100 nm size islands, separated from each other by nanometer-size gaps. The thickness of PPy can be varied from 30 to 200 nm. The IV characteristics of these hybrid PPy–Au nanostructures show strong non-linearity at low temperatures, and in particular for the more insulating samples. The hopping transport is further verified from the log I versus V1/4 plots. Furthermore, the IV data follow an empirical relation dlogI/dV1/4T−1/2.

Keywords: CONDUCTING POLYMERS; MESOSCOPIC TRANSPORT; POLYPYRROLE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.3587

Publication date: December 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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