Effect of electron beam irradiation on the conduction phenomena of unplasticized PVC/PVA copolymer

Abstract

The effect of electron beam irradiation on the conduction phenomenon of unplasticized PVC/PVA copolymer has been investigated. The current–voltage ( J–V) characteristics in the voltage range 0.1–60 V were measured for films irradiated with different doses; 150, 550 and 1100 kGy. The temperature dependence of the J–V characteristics in the temperature range 303–343 K was obtained. The results indicated that the conduction as a function of the applied voltage depends on the presence of localized state or the trapping levels positioned at a specific energy E t below the conduction band. Therefore, the charge carrier's concentration in the conduction band, trapping parameter θ, electron mobility μ 0, effective electron drift mobility μ e as well as Fermi level energy E f and trapping energy E t were estimated as a function of dose.