<p>In this work, new nanostructures films were synthesized from a PVA-MC blend doped with SrTiO₃-SiO₂ NPs, making them promising nanomaterials for various nanooptical and photonics applications. The PVA-MC/SrTiO₃-SiO₂ films exhibited exceptional properties compared to other types of nano-membranes, including exceptional optical properties, low cost, and excellent chemical and physical performance. The microstructural, morphological, and optical characteristics of the PVA-MC/SrTiO₃-SiO₂ films were studied. The outcomes exhibited that the PVA-MC absorbance increased by 89% in the UV-A spectra (λ = 260&#xa0;nm) and 94.7% in the spectra of near-infrared (λ = 760&#xa0;nm) while the SrTiO₃-SiO₂ nanoparticle ratio reached 6.7 wt.%. These performances make the PVA-MC/SrTiO₃-SiO₂ nanomaterials a promising films for nanooptics and photonics applications. The allowed energy gap decreased to 0.7&#xa0;eV while the SrTiO₃-SiO₂ nanoparticle ratio reached 6.7 wt%. The other optical factors of PVA-MC enhanced with increasing the content of SrTiO₃-SiO₂ nanoparticle. Finally, the outcomes demonstrated the PVA-MC/SrTiO₃-SiO₂ hybrid films are promising hybrid nanosystem for potential optoelectronics applications.associated with the formation of new phases</p> Graphical Abstract <p></p>