title: High catalytic activity and stability of nickel sulfide and cobalt sulfide hierarchical nanospheres on the counter electrodes for dye-sensitized solar cells.
abstract: In situ grown nickel sulfide and cobalt sulfide hierarchical nanospheres on F-doped SnO2 (FTO) substrates exhibited comparable catalytic activities to sputtering Pt on the counter electrodes for dye-sensitized solar cells (DSSCs). The fresh cells with the nickel sulfide and cobalt sulfide on the counter electrodes could reach power conversion efficiencies of 6.81% and 6.59% respectively, approaching an efficiency of 6.85% based on the sputtering Pt counter electrode. Both nickel sulfide and cobalt sulfide counter electrodes could maintain the cell's relatively high performance in the long-term stability test in 504 hours.
authors.affiliation: National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, P. R. China. yutao@nju.edu.cn.
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Chunxiong
authors.initials: C
authors.lastname: Bao
authors.forename: Kai
authors.initials: K
authors.lastname: Zhu
authors.forename: Tao
authors.initials: T
authors.lastname: Yu
authors.forename: Faming
authors.initials: F
authors.lastname: Li
authors.forename: Jianguo
authors.initials: J
authors.lastname: Liu
authors.forename: Zhaosheng
authors.initials: Z
authors.lastname: Li
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Zou