Investigation of Dielectric Performance of ZnO Nanoparticle Doped Polymer Composite Films

Dielectric measurements are crucial for understanding the electrical properties of the materials. However, traditional electrode fabrication methods often require complex and time-consuming processes. In this study, we present a novel solution-casting technique for fabrication of electrodes, which enables rapid and cost-effective production. Polyvinyl alcohol (PVA) is a promising polymer material for flexible electronics due to its excellent mechanical properties and ease of processing. The composite films are fabricated by adding ZnO nanoparticles in 10 wt% PVA polymer solution with different proportion. From morphological analysis, nearly homogenous distribution of ZnO nanoparticles in the polymer film is observed. The electrical properties of ZnO doped polymer matrix were investigated by using two probe techniques. The results show that, the incorporation of ZnO nanoparticles significantly enhances the conductivity and low dielectric constant of fabricated polymer composite electrode. The properties like excellent flexibility, improved electrical conductivity make the composite film efficient to be used in EMI shielding and microwave absorption applications.