Studies on Optical, Structure, and Photoconductivity of Titanium Dioxide Thin Films Prepared by Chemical Bath Deposition Via Aqueous Route

摘要

Titanium dioxide (TiO_2) thin films of different concentrations are prepared by using titanium trichloride on conducting FTO glass substrate by chemical bath deposition (CBD) method. The X-ray powder diffraction (XRD) method is used to study the structure of TiO_2 thin film. XRD analysis has confirmed amorphous nature of the TiO_2.The surface morphology of the film is studied using field emission scanning electron microscopy (FE-SEM). The optical properties are studied using the UV-VIS and photoluminescence (PL) spectroscopy. The band gap of prepared titanium dioxide (TiO_2) thin film is 2.84 eV. A photo-electrochemical cell analysis shows that the conversion efficiency of 3.24 with a fill factor of 43.