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Abstract
Polythiophene has been prepared by oxidation process. Polythiophene-V2O2 composites were prepared by mechanical mixing of PTh and V2O2 in different weight percentages.. The Polythophene has been synthesised at 323K by chemical route. The temperature dependence of electrical conductivity has been analyzed using Mott’s SPH and 3D VRH models. Activation energy, Ea, for conduction were determined. Ea values were found to be 0.638 to 0.399 (meV). With increase in V2O5 content, Ea decreased and increased. The density of charge carriers at Fermi level was determined. The changes in dielectric properties with temperature and frequency were calculated over broad ranges. Dielectric constant decrease gradually with frequency up to 70KHz and become constant for higher frequencies. Dielectric constant decreased with increase in frequency and increased with temperature. Dielectric loss decreased with increase in frequency and increased with temperature. Conductivity increased with increase of both temperature and frequency.