Swift Heavy Ion Irradiation Induced Modifications in Electrical and Thermal Properties of Polystyrene (Ps)/titanium Dioxide (Tio 2 ) Nanocomposite Thin Film

Polystyrene (PS)/Titanium dioxide (TiO ₂ ) nanocomposite thin films were prepared by a solvent casting method with contains 3% by mass of TiO ₂ nanoparticles. These prepared thin films were Swift heavy ion (SHI) beam irradiated with 55MeV Carbon ion beam at various ions fluences from 1×10 ¹¹ to 11×10 ¹³ ion cm ^− 2 . Ion induced modifications were investigated by various characterizations techniques such as X-ray diffraction (XRD), UV–vis spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and thermally stimulated depolarization current (TSDC). With increasing ion fluences there were many changes like average crystallite size, percentage crystallinity, energy band gap (i.e. Direct and Indirect), stability, glass transition ( T _g ) temperature, released charge, activation energy and charge carrier mobility were decreases while relaxation time and peak current increase. TSDC shows that the α-relaxation peak was shifted towards the lower temperature side with ion fluences.