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DC Conductivity Studies of PPy/ZnO Composites

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Author Affiliations

  • 1Department of Physics, Gulbarga University, Gulbarga, Karnataka – 585106, INDIA

Res. J. Material Sci., Volume 3, Issue (5), Pages 1-5, October,16 (2015)

Abstract

Samples of conducting polypyrrole (PPy) and Polypyrrole/ZnO composites were synthesized through chemical oxidative polymerization method using an anhydrous ferric chloride (Fecl3) as an oxidizing agent. DC conductivity as a function of temperature as has been measured and data analyzed using Small polaron hopping and Variable range hopping theories. Activation energies for conduction and density of levels at Fermi energy were determined. Conductivity was found to be in the order of 10-3 (Ω-1m-1) and exhibited semiconducting behavior with respect to temperature. Activation energy was found to be in the order of a meV. It is for the first time PPy-ZnO nanocomposites were investigated for temperature variation of conductivity and conduction mechanisms probed thoroughly.

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