Effect of NaI Doping on the Electrical Properties of PVA Polymer Thin Film Prepared by Spin Coating Technique

Abstract

In this study, pure polyvinyl alcohol (PVA) polymer films and films doped with sodium iodide (NaI)  at varying weight ratios (2%, 5%, 10%, 15%) were prepared using the spin coating technique at room temperature. The electrical properties of the polymer were investigated before and after doping. Experimental results revealed that electrical conductivity increases with higher doping ratios across all polymer films. Additionally, the dielectric constant decreases with increasing frequency but increases with higher doping weight ratios at the same frequency.