Abstract
TiO2 thin films have been deposited on FTO-coated glass substrates using sol-gel technology for application as the work electrode for the dye-sensitized solar cells (DSSC). The effects of annealing temperature (400~700℃) on the microstructure, morphology and optical properties of TiO2 thin films were studied. The electrode of DSSC fabricated with TiO2 thin films were characterized by X-ray diffraction (XRD), scanning electron microscopic (SEM) and Brunauer-Emmett-Teller (BET) analysis. Based on the results, the TiO2 films annealed at 700℃ shows better crystallization, higher porosity and surface area than those of TiO2 films annealed at lower temperature. The higher efficiency (η) of 1.57% with J(subscript sc) and V(subscript ∝) of 5.6 mA/cm^2 and 0.65 V, respectively, was obtained by the TiO2 film annealed at 700℃.
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