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Objectives: Synthesis of hybrid nanoparticles (NPs) and intercalation of as prepared NPs inside polymer matrix to fabricate polymer nanocomposites (NC) and evaluate the optoelectronic properties. Method: A simple, time consuming solution combustion method was used to synthesize silver doped gallium oxide (AgGaO 2 ) NPs. The solution casting process was employed to prepare NC films of poly(vinyl alcohol) (PVA) with the inclusion of AgGaO 2 NPs as nanofiller. Finding: The analytical technique such as Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy and differential scanning calorimetry analyses were used to analyze the PVA/AgGaO 2 NC films. The findings of various characterization approaches showed that the morphological, structural and thermal characteristics of PVA/AgGaO 2 NC films had improved, as well as confirms the existence of AgGaO 2 NPs in the PVA matrix. Furthermore, the dielectric characteristics of the PVA/AgGaO 2 NC films were studied using an LCR meter at various frequencies (50 Hz-1 MHz). With intercalating four different wt% of AgGaO 2 NPs content as 0.5, 1, 2 and 4 wt% the dielectric constant and dielectric loss of NC films with 4 wt % AgGaO 2 NPs incorporated were 112.1 and 51.5 respectively. Novelty: This improvement in dielectric characteristics revealed the uniform distribution and effective interaction of AgGaO 2 NPs with the active site of PVA chains. The preceding findings demonstrated that the obtained PVA NCs were promising materials for flexible energy storage and UV-shielding applications.

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