The use of ZrO2 mixed TiO2 nanostructures as efficient dye-sensitized solar cells' electrodes |
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| Affiliation: | 1. College of Materials Science and Engineering, Qingdao University of Science and Technology, Zhengzhou Road 53, Qingdao 266042, China;2. Institute of Materials Science and Engineering, Ocean University of China, Songling Road 238, Qingdao 266100, China;1. Department of Catalysis and Reaction Engineering, Institute of Chemical Process Fundamentals of the ASCR, v. v. i., Rozvojová 135, 165 02 Prague 6, Czech Republic;2. Nanotechnology Centre, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava, Czech Republic;3. Energy Units for Utilization of non Traditional Energy Sources, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava, Czech Republic;4. Department of Physical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic;5. Institute for Environmental Technology, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava, Czech Republic;1. Department of Applied Chemistry, University of Johannesburg, Doornfontein, PO Box 17011, Johannesburg, South Africa;2. Nanotechnology and Application Centre, University of Allahabad, Allahabad 211002, India;3. Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Science Campus,PO Box 1709, Johannesburg, South Africa |
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| 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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