title: TiO₂ photoanode structure with gradations in V concentration for dye-sensitized solar cells.
abstract: V-TiO₂(GC) photoanode film with graduated structure was prepared in a dye-sensitized solar cell work electrode by layer-by-layer method using TiO₂ precursor with gradations in V concentration on the indium tin oxide transparent conducting glass from substrate to surface. The effects of the gradient in V concentration on the structures and properties of TiO₂ photoanode film were discussed. The structure of the gradient V concentration has remarkable influence on the final performance of the DSSCs and I-V characteristic measurement indicates an enhanced efficiency by 31% as compared to pure TiO₂ nanoparticles film samples due to abundant solar light, fast injection and transmission velocity and the slowdown recombination of photoexcited electrons, simultaneously.
authors.affiliation: Department of Materials Science and Engineering, Tianjin Institute of Urban Construction, 300384 Tianjin, China. tjulzf@163.com
authors.forename: Zhifeng
authors.initials: Z
authors.lastname: Liu
authors.forename: Yabin
authors.initials: Y
authors.lastname: Li
authors.forename: Chengcheng
authors.initials: C
authors.lastname: Liu
authors.forename: Jing
authors.initials: J
authors.lastname: Ya
authors.forename: Lei
authors.initials: L
authors.lastname: E
authors.forename: Wei
authors.initials: W
authors.lastname: Zhao
authors.forename: Dan
authors.initials: D
authors.lastname: Zhao
authors.forename: Li
authors.initials: L
authors.lastname: An