Abstract
TiO2, a thermally stable, non-flammable and good absorber of UV radiation is useful in various applications such as sensors and solar cells. Potassium Iodide (KI) doped TiO2 film was deposited on conductive Fluorine doped Tin Oxide (FTO) glass substrate by spin coating technique. The microstructure and surface morphology of the film was characterized by XRD and FE-SEM. XRD and Raman analysis reveals the film belongs to anatase phase. The morphological properties were investigated by FE-SEM, and the crystallite size was found to be larger, which lowers the band gap energy. The optical properties of the films characterized by UV-Visible spectroscopy shows an enhancement in absorption for KI doped TiO2 film, and band edge was found to appear in the visible region at 437 nm.
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