Dye-sensitized solar cells composed of Ti_{1鈭?span style='font-style: italic'>x}Sn_xO₂ nanocrystals

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• 作者：Aiying Pang ; Yafeng Li ; Huixing Zhang ; Yangzhong Wang ; Mingdeng Wei ; ^{wei-mingdeng@fzu.edu.cn}
• 关键词：Ti1&minus ; xSnxO2 ; Nanocrystal ; Dye-sensitized solar cells ; Photovoltaic property
• 刊名：Materials Chemistry and Physics
• 出版年：2012
• 期刊代码：58_02540584
• 类别：ms
• 出版时间：16 July, 2012
• 卷：135
• 期：1
• 页码：46-50
• 文件大小：489 K

摘要

Ti_1鈭?em>xSn_xO₂ 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, Ti_1鈭?em>xSn_xO₂ nanocrystals were first used as the photoelectrode material for dye-sensitized solar cells. A cell made of Ti_1鈭?em>xSn_xO₂ (x聽=聽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 Ti_1鈭?em>xSn_xO₂ (x聽=聽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聽mW聽cm^鈭?).