A simple test for the occurrence of the 1D- variable hopping conduction mechanism (VRH) in semiconducting polymers

Abstract

Semiconducting polymers have unusually strong temperature of dependence of electrical conductivity. It is evaluated that this strong temperature dependence is due to one-dimensional variable hopping conductivity (1D-VRH) in the conducting polymers. The VRH depends on chemical structure of polymer studied and hopping is formed by the one or three dimensional diffusion between intermolecules in polymers. The experimental data obtained from dielectric constant supports the 1D-VRH theory, i.e. the fact that the dielectric constant increases linearly with increasing temperature is evidence for VRH.