Citation: Zheng Li, Zhou Xueqin, Liu Dongzhi, Jiang Kejian, Tian Jianhua, Li Wei. Preparation of Cos Films and Their Application in Dye-Sensitized Solar Cells[J]. Chemistry, ;2017, 80(8): 734-739. shu

Preparation of Cos Films and Their Application in Dye-Sensitized Solar Cells

Zheng Li ^1,2,3 ,
Zhou Xueqin ^1,2 ,
Liu Dongzhi ^1,2 ,
Jiang Kejian ³ ,
Tian Jianhua ^1,2 ,
Li Wei ^1,2,,

1.
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072
2.
Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072
3.
Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190

Corresponding author: Li Wei, liwei2008@tju.edu.cn
Received Date: 9 March 2017
Accepted Date: 5 April 2017

Figures(8)

Cobalt sulfide (CoS) counter electrode(CE) in dye-sensitized solar cells(DSSC) was successfully prepared by a simple solid-gas reaction method on the conductive glass of fluorine doped tin oxide. The optimal concentration of CoS was further confirmed by optimizing the process. The surface morphology, material structure, electrocatalytic and photovoltaic performances were characterized by SEM, XRD, Raman spectroscopy, XPS, EIS, CV, Tafel polarization curves and photoelectric current density voltage characteristic curves. The results showed that CoS prepared from 20% cobalt acetate had higher electrocatalytic activity as a counter electrode. Under standard illumination of one sun (100 mW·cm^-2), the DSSC incorporating CoS-decorated FTO glass substrate as a CE provide PCE of 7.81% with J_sc of 17.3 mA·cm^-2, V_oc of 0.74V, and FF of 0.61, which are comparable with the values obtained for the device with a Pt-based CE (PCE: 7.97%).
- Dye sensitized solar cells,
- Counter electrode,
- Cobalt sulfide,
- Solid gas reaction,
- Electrocatalytic activity
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