Graphene-compositing optimization of the properties of dye-sensitized solar cells

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• 作者：Xiaoli Fang ; Meiya Li ; Kaimo Guo ; Xiaolian Liu ; Yongdan Zhu ; Bobby Sebo ; Xingzhong Zhao
• 关键词：Dye sensitized solar cell ; Graphene-compositing ; Raman spectra ; Dye absorption
• 刊名：Solar Energy
• 出版年：March, 2014
• 年：2014
• 卷：101
• 期：Complete
• 页码：176-181
• 全文大小：1126 K

文摘

Graphene-composited TiO₂ photoelectrodes are prepared by hydrothermal method. The influences of different amount of graphene on the structures and properties of the dye-sensitized solar cells (DSSCs) are studied and an optimal graphene-composited DSSC is obtained. Studies indicate that compositing of graphene can effectively enhance the open circuit voltage, short circuit current density, and photoelectric conversion efficiency (畏) of the DSSCs. Furthermore, the 畏 of the DSSC with the optimal graphene-composited TiO₂ film is 7.02 卤 0.06%, significantly higher than that of the pure TiO₂ DSSC. These improvements can be attributed to the increased dye absorption due probably to the increase of the photoelectrode films鈥?specific surface area and the good conductivity of graphene.