Dye-sensitized solar cells composed of Ti1−xSnxO2 nanocrystals |
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Authors: | Aiying Pang Yafeng LiHuixing Zhang Yangzhong WangMingdeng Wei |
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Affiliation: | Institute of Advanced Energy Materials, Fuzhou University, Fuzhou, Fujian 350002, China |
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Abstract: | Ti1−xSnxO2 nanocrystals were successfully synthesized by using a simple solvothermal route, and its band energy gap broaden and flat band potential can be rationally regulated with increasing x value. Furthermore, Ti1−xSnxO2 nanocrystals were first used as the photoelectrode material for dye-sensitized solar cells. A cell made of Ti1−xSnxO2 (x = 0.3) exhibited the best photovoltaic performance. This is due to its most narrow band gap energies, most negative flat band potential and lowest dark current densities. After the surface of Ti1−xSnxO2 (x = 0.3) electrode was treated with TiCl4 solution, the cell sensitized by a mixed solution of N719 and D131 dye exhibited the best efficiency of 4.64% under the illumination of 1 sun (AM1.5, 100 mW cm−2). |
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Keywords: | Ti1&minus xSnxO2 Nanocrystal Dye-sensitized solar cells Photovoltaic property |
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