Abstract
Both pure and doped polyvinyl alcohol (PVA) with 1 wt % of Fe2O3 or NiO nanoparticles (NPs) were prepared using casting method. Structural and optical properties of the pure and doped PVA were studied. X-ray diffraction reveals the semi-crystalline structure of pure PVA which contains crystalline and amorphous phases. The amorphous nature of the doped PVA was affected by doping by different NPs materials. The calculated optical band gap of pure PVA was found to be 4.9 eV and it depends on the doping with Fe2O3 or NiO NPs. Absorption coefficient, refractive index and optical conductivity were estimated for all PVA samples. The optical dispersion parameters such as single oscillator and dispersion energy were determined . Moreover, the nonlinear optical susceptibility and nonlinear refractive index were found to be doping dependent. The optical conductivity of the PVA is enhanced by a doping of 1 wt % of Fe2O3 NPs. The obtained results suggest strongly the applicability of these samples in the optoelectic applications.
•Different metal oxides of Fe2O3 and NiO nanoparticles were fabricated.•PVA pure and doped with these nanoparticles were studied.•Optical properties of PVA and PVA doped Fe2O3 and NiO nanoparticles were studied.•These studied showed that the doping process of metal or metal oxide NPs is considered as a suitable tool to control the properties of PVA.