Tuning the Optical Properties of Polyvinylidene Fluoride Nanocomposite Films Reinforced with Anatase Phase Titanium Oxide for Optoelectronic Applications

Polyvinylidene Fluoride (PVDF) polymer-based nanocomposites are known for their high optoelectronic, dielectric, and electrochemical properties. In the present work, anatase phase Titanium dioxide (A-TiO 2 ) reinforced PVDF nanocomposite films are prepared by the solution casting method to enhance the optical and dielectric properties. The morphology of nanocomposite films is studied by Field Emission Scanning Electron Microscopy (FESEM). The optical properties of prepared nanocomposite films for various compositions of A-TiO 2 are estimated using UV-visible spectroscopy. The direct and indirect band gap decreases from 5.93 to 4.45 eV and 4.76 to 3.70 eV respectively for 4 wt% of A-TiO 2 nanoparticles. The enhanced absorption in the UV region makes the current material a potential candidate for shielding UV radiations. After filler reinforcement, there is a significant increase in the refractive index and optical conductivity values for nanocomposite films. Thus, nanocomposite films can find many applications to block UV rays, and develop solar cells, and flexible optical devices.