title: Novel Photoanode for Dye-Sensitized Solar Cells with Enhanced Light-Harvesting and Electron-Collection Efficiency.
abstract: A novel photoanode structure modified by porous flowerlike CeO2 microspheres as a scattering layer with a thin TiO2 film deposited by atomic layer deposition (ALD) is prepared to achieve a significantly enhanced performance of dye-sensitized solar cells (DSSCs). The light scattering capability of the photoanode with the porous CeO2 microsphere layer is considerably improved. The interconnection of particles and electrical contact between bilayer and conducting substrate is further enhanced by an ALD-deposited TiO2 film, which effectively reduces the electron recombination and facilitates electron transport and thus enhances the charge collection efficiency of DSSCs. As a result, the overall efficiency of the obtained TiO2-CeO2-based cells reaches 9.86%, which is 31% higher than that of the DSSCs with a conventional TiO2 photoanode.
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST) , Beijing 100083, China.
authors.forename: Weixing
authors.initials: W
authors.lastname: Song
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST) , Beijing 100083, China.
authors.forename: Yudong
authors.initials: Y
authors.lastname: Gong
authors.affiliation: Advanced Materials and Technology Institute, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Tian
authors.affiliation: Department of Materials and Engineering, University of Washington , Seattle, Washington 98195-2120, United States.
authors.forename: Guozhong
authors.initials: G
authors.lastname: Cao
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST) , Beijing 100083, China.
authors.forename: Huabo
authors.initials: H
authors.lastname: Zhao
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST) , Beijing 100083, China.
authors.forename: Chunwen
authors.initials: C
authors.lastname: Sun
keywords: atomic layer deposition; dye-sensitized solar cells; electron collection efficiency; flowerlike CeO2 microspheres; light harvesting