Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 575, Issue -, Pages 168-173Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.02.045
Keywords
Double light-scattering layer film; TiO2 hollow spheres; TiO2 nanosheets; Dye-sensitized solar cells
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Funding
- NSFC [51102087, 11105047, 61274129]
- Fundamental Research Funds for the Central Universities [2012-Ia-047]
- Natural Science Foundation of Hubei Province of China [2011CDB067]
- Educational Commission of Hubei Province of China [Z20101001]
- Wuhan Science and Technology Bureau of Hubei Province of China [201051730551]
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A novel TiO2 double light-scattering layer (TiO2-DLL) film consisting of TiO2 hollow spheres (TiO2-HS) as overlayer and TiO2 nanosheets (TiO2-NS) as underlayer was designed as the photoelectrode of dye-sensitized solar cells (DSSCs). The photoelectric conversion performances of DSSCs based on TiO2-HS film, TiO2-NS film, and TiO2-DLL film were investigated. It was found that the TiO2-DLL film cell achieved the highest conversion efficiency and reached up to a maximum value of 5.08%, which is 23.3% higher than that of TiO2-HS film cell (eta = 3.62%) and 8.3% higher than that of TiO2-NS film cell (eta = 4.31%) under identical film thickness at a constant irradiation of 100 mW cm(-2). The enhanced efficiency of TiO2-DLL film can be attributed to its relatively high specific surface area and enhanced light-scattering capability. Furthermore, the TiO2-NS underlayer ensures good electronic contact between TiO2 film and the F-doped tin oxide (FTO) conducting glass. (c) 2013 Published by Elsevier B.V.
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