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Int. J. Mol. Sci. 2012, 13(11), 14917-14928; doi:10.3390/ijms131114917
Article

Low Temperature Hall Effect Investigation of Conducting Polymer-Carbon Nanotubes Composite Network

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1 Department of Physics, Faculty of Science, University Putra Malaysia, Serdang 43400, Malaysia 2 Department of Physics, Faculty of Science, Islamic Azad University, Eslamshahr Branch, 3314767653, Iran 3 Department of Physics, Faculty of Science, Islamic Azad University, Shahre Ghods Branch, 3754198811, Iran 4 Department of Chemistry, Faculty of Science, University Putra Malaysia, Serdang 43400, Malaysia
* Author to whom correspondence should be addressed.
Received: 9 July 2012 / Revised: 26 September 2012 / Accepted: 11 October 2012 / Published: 14 November 2012
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
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Abstract

Polypyrrole (PPy) and polypyrrole-carboxylic functionalized multi wall carbon nanotube composites (PPy/f-MWCNT) were synthesized by in situ chemical oxidative polymerization of pyrrole on the carbon nanotubes (CNTs). The structure of the resulting complex nanotubes was characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The effects of f-MWCNT concentration on the electrical properties of the resulting composites were studied at temperatures between 100 K and 300 K. The Hall mobility and Hall coefficient of PPy and PPy/f-MWCNT composite samples with different concentrations of f-MWCNT were measured using the van der Pauw technique. The mobility decreased slightly with increasing temperature, while the conductivity was dominated by the gradually increasing carrier density.
Keywords: polypyrrole; carbon nanotube; Hall effect; conductivity polypyrrole; carbon nanotube; Hall effect; conductivity
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Bahrami, A.; Talib, Z.A.; Yunus, W.M.M.; Behzad, K.; M.Abdi, M.; Din, F.U. Low Temperature Hall Effect Investigation of Conducting Polymer-Carbon Nanotubes Composite Network. Int. J. Mol. Sci. 2012, 13, 14917-14928.

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