Citation: HUANG Huan, WEI Yu-Long, BAO Chun-Xiong, GAO Hao, YU Tao, ZOU Zhi-Gang. Size-Controlled Nanoporous TiO2 Spheres with High Dye-Loading: Facile Synthesis and Application as Scattering Layers in Dye-Sensitized Solar Cells[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(10): 2169-2175. doi: 10.3969/j.issn.1001-4861.2013.00.326
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Anatase nanoporous TiO2 spheres were synthesized via a modified sol-gel method. By controlling the concentration of the precursor, size-controlled nanoporous TiO2 spheres with high dye-loading were achieved. The synthesized spheres with different sizes (100 nm, 175 nm, 225 nm, 475 nm) were used as scattering layers on a TiO2 nanoparticle film by electrophoresis deposition method to form bi-layered dye-sensitized solar cells (DSSCs). Scattering effect of the layers with different sized spheres was studied. It was proved that the 475nm-sized spheres showed optium light scattering effect. Due to the scattering effect, an overall photoelectric conversion efficiency of 6.3% has been achieved, a 30% increase compared with the nanoparticle-based photoanode.
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