Electrochemical Behavior of TiO₂ Nanoparticle Doped WO₃ Thin Films

Abstract

Nanoparticle TiO 2 doped WO 3 thin films by pulsed spray pyrolysis technique have been studied on fluorine tin doped (FTO) and glass substrate. XRD shows amorphous nature for undoped and anatase phase of TiO 2 having (101) plane for nanoparticle TiO 2 doped WO 3 thin film. SEM shows microfibrous reticulated porous network for WO 3 with 600 nm fiber diameter and nanocrystalline having size 40 nm for TiO 2 nanoparticle doped WO 3 thin film. TiO 2 nanoparticle doped WO 3 thin film shows ∼95% reversibility due to may be attributed to nanocrystalline nature of the film, which helpful for charge insertion and deinsertion process. The diffusion coefficient for TiO 2 nanoparticle doped WO 3 film is less than undoped WO 3 .