Conductivity and Dielectric Behavior of AgCF₃SO₃ Doped PEO Polymer Films

Abstract

Abstract PEO containing AgCF3SO3 polymer films have been prepared by the hot press technique. The effect of salt concentration on the frequency-dependent conductivity properties of PEO: AgCF3SO3 complexes are investigated by impedance spectroscopy in the temperature range from 303 K to 328 K. The ac conductivity and dielectric properties of the prepared samples have been analyzed. The ac conductivity obeyes the universal power law and as the temperature increases, the feature of σ(ω) α ωn is more predominant. The dielectric permittivity is found to increase with temperature of the prepared samples. The imaginary part of electrical modulus, M" shows the formation of dispersion peak. Relaxation times for the ionic charges carriers were extracted from the peak maxima of imaginary part of modulus at various temperatures. The plot of relaxation times as a function of temperature shows Arrhenius type behavior. Keywords: Ag+ ion conductorsconductivityimpedancerelaxation timemodulus