Polymer-based nanocomposites are considered promising candidates for flexible modern electronic devices. ZnO–PVA polymer nanocomposites have gained recent research interest due to excellent optical and dielectric properties. Transition metals (Cr, Mn, Fe, Ni, Cu) oxide nanoparticles incorporated ZnO–PVA composite matrix are investigated in this work for a comprehensive study of its structure, morphology, optical and dielectric parameters. Crystallographic information revealed the presence of crystalline zinc oxide and transition metals oxides reflections in specific orientations in the PVA matrix. The inter-particle distance and interfacial interaction of transition metal oxide nanoparticles in host polymer are observed as important factors for improved dipole polarization. The nanoparticles of metal oxides in matrix induce the enhanced negative charge carriers and exhibit robust interactions with positive carriers of the polymer surface. A sharp and substantial increment in real dielectric permittivity from 74 for ZnO–PVA to maximum 350 for ZnO–PVA–Fe₂O₃ composition was observed by the addition of transition metal oxides in the PVA matrix with same loss factor value of 0.1.

基于聚合物的纳米复合材料被认为是柔性现代电子设备的有希望的候选者。ZnO-PVA聚合物纳米复合材料因其优异的光学和介电性能而获得了近期的研究兴趣。在这项工作中，研究了掺入ZnO-PVA复合基质的过渡金属（Cr，Mn，Fe，Ni，Cu）氧化物纳米粒子，以对其结构，形态，光学和介电参数进行全面研究。晶体学信息揭示了在PVA基质中特定取向的结晶氧化锌和过渡金属氧化物反射的存在。观察到主体聚合物中过渡金属氧化物纳米粒子的粒子间距离和界面相互作用是改善偶极极化的重要因素。基质中金属氧化物的纳米颗粒诱导增强的负电荷载流子，并表现出与聚合物表面正载流子的牢固相互作用。实际介电常数从ZnO-PVA的74急剧增加到ZnO-PVA-Fe的最大350通过在PVA基质中添加具有相同损耗因子值为0.1的过渡金属氧化物，观察到₂ O ₃组成。