Open AccessAnalysis of electrical measurements oncadmium chloridedoped PVA-PVP blend
Author(s) -
Basavarajeshwari M. Baraker,
Blaise Lobo
Publication year - 2017
Publication title -
mapana journal of sciences
Language(s) - English
Resource type - Journals
ISSN - 0975-3303
DOI - 10.12723/mjs.40.4
Subject(s) - arrhenius equation , charge carrier , materials science , activation energy , vinyl alcohol , variable range hopping , atmospheric temperature range , range (aeronautics) , ion , casting , analytical chemistry (journal) , charge (physics) , polymer chemistry , chemical engineering , thermodynamics , chemistry , polymer , composite material , optoelectronics , thermal conduction , organic chemistry , physics , quantum mechanics , engineering
Films of Poly(vinyl alcohol) (PVA) - Poly(vinyl pyrrolidone) (PVP) blend, doped withcadmium chloride (CdCl2) from 0.5 wt% up to 40 wt% andprepared by solution casting method,were studied using temperature dependent direct current (DC)electrical measurements. The DC electrical data were analyzed using Variable Range Hopping (VRH) modelin the temperature range varying from 303K up to 318K. The Mott parameters are determined. The study of time evolution of current passing through the sample, when a constant voltage is applied across it reveals that ions are the majority charge carriers, but the role of electrons in charge transport cannot be neglected. The activation energy (Ea) for mobility of charge carriers has been calculated from VRHand Arrhenius models.