The preparation and characterization of nanostructured TiO{sub 2}-ZrO{sub 2} mixed oxide electrode for efficient dye-sensitized solar cells
- Institute of Advanced Energy, Kyoto University, Gokasho-cho, Uji, Kyoto-fu 611-0011 (Japan)
The preparation of nanostructured mixed metal oxide based on a sol-gel method with surfactant-assisted mechanism, and its application for dye-sensitized solar cell (DSSC) are reported. The mixed zirconia (ZrO{sub 2}) and titania (TiO{sub 2}) mesoporous powder possessed larger surface area than the corresponding titania. For the UV action spectra of unsensitized photochemical cell, the mixed zirconia/titania electrode can absorb UV light below 380nm, corresponding to band gap (E{sub g}) around 3.27eV, which is higher than that of pure component of titania (E{sub g}=3.2eV). Both of these improved properties, i.e., BET surface area and band gap, contributed to the improvement on a short-circuit photocurrent up to 11%, an open-circuit voltage up to 4%, and a solar energy conversion efficiency up to 17%, for the DSSC fabricated by mesoporous zirconia/titania mixed system when compared to the cell that was fabricated only by nanostructured TiO{sub 2}. The cell fabricated by 5{mu}m thick mixed TiO{sub 2}-ZrO{sub 2} electrode gave the short-circuit photocurrent about 13mA/cm{sup 2}, open-circuit voltage about 600 mV and the conversion efficiency 5.4%.
- OSTI ID:
- 20725871
- Journal Information:
- Journal of Solid State Chemistry, Vol. 178, Issue 4; Other Information: DOI: 10.1016/j.jssc.2004.12.043; PII: S0022-4596(04)00667-X; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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