Abstract
The mixed oxide of zirconium (ZrO2) and titanium (TiO2) nanostructures have been synthesized and used as electrodes for dye-sensitized solar cells (DSC). The TiO2–ZrO2 mixed oxide powder has a larger surface area than the pure component of TiO2. For the UV action spectra of unsensitized photochemical cell, the TiO2–ZrO2 mixed oxide electrode band gap (Eg) around 3.27 eV, which is higher than that of pure component of titania (Eg=3.2 eV). The increases in both of BET surface area and band gap contributed to the improvement on short-circuit photocurrent and open-circuit voltage, respectively. The DSC fabricated by TiO2–ZrO2 mixed oxide electrode significantly improved solar energy conversion efficiency when compared to a cell that was fabricated only by pure component of TiO2.
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