title: Efficient p-type dye-sensitized solar cells with all-nano-electrodes: NiCo2S4 mesoporous nanosheet counter electrodes directly converted from NiCo2O4 photocathodes.
abstract: We report the successful growth of NiCo2S4 nanosheet films converted from NiCo2O4 nanosheet films on fluorine-doped tin oxide substrates by a low-temperature solution process. Low-cost NiCo2S4 and NiCo2O4 nanosheet films were directly used for replacing conventional Pt and NiO as counter electrodes and photocathodes, respectively, to construct all-nano p-type dye-sensitized solar cells (p-DSSCs) with high performance. Compared to Pt, NiCo2S4 showed higher catalytic activity towards the I(-)/I3 (-) redox in electrolyte, resulting in an improved photocurrent density up to 2.989 mA/cm(2), which is the highest value in reported p-DSSCs. Present p-DSSCs demonstrated a cell efficiency of 0.248 % that is also comparable with typical NiO-based p-DSSCs.
authors.affiliation: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, People's Republic of China.
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Shi
authors.affiliation: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, People's Republic of China.
authors.forename: Hao
authors.initials: H
authors.lastname: Lu
authors.affiliation: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, People's Republic of China.
authors.forename: Qiong
authors.initials: Q
authors.lastname: Liu
authors.affiliation: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, People's Republic of China.
authors.forename: Fengren
authors.initials: F
authors.lastname: Cao
authors.affiliation: Analysis and Testing Center, Soochow University, Suzhou 215006, People's Republic of China.
authors.forename: Jun
authors.initials: J
authors.lastname: Guo
authors.affiliation: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, People's Republic of China.
authors.forename: Kaimo
authors.initials: K
authors.lastname: Deng
authors.affiliation: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, People's Republic of China.
authors.forename: Liang
authors.initials: L
authors.lastname: Li
keywords: Counter electrodes; Dye-sensitized solar cells; Nanosheets; Ternary sulfides; p-type