A novel biomass coated Ag-TiO2 composite as a photoanode for enhanced photocurrent in dye-sensitized solar cells

作者：Tian Zhongbiao^*; Wang Liqing; Jia Lishan; Li Qingbiao; Song Qianqian; Su Shuai; Yang Hui

来源：RSC Advances, 2013, 3(18): 6369-6376.

DOI：10.1039/c3ra40195b

A novel biomass-coated Ag nanoparticle-modified TiO2 composite was prepared and used as a photoanode in a dye-sensitized solar cell with a high surface area, strong light scattering and efficient electron transport. It was found that syzygium extract has an appreciable effective function as a reducing and stabilizing agent simultaneously. The mean size of the synthesized silver nanoparticles is 4.0 +/- 0.7 nm measured on the TEM images. Residual hydroxyl groups of the biomass on the photoanode improve dye absorption and electron injection efficiency. The syzygium-Ag-TiO2 DSSC exhibits the best performance with a short-circuit current of 11.8 mA cm(-2) corresponding to a photoelectric conversion efficiency of 5.12%, which is higher than the glucose-Ag-TiO2 and UV-Ag-TiO2 DSSCs, and much higher than the blank DSSC.

• 出版日期2013
• 单位厦门大学