Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10248966 | Solar Energy Materials and Solar Cells | 2005 | 9 Pages |
Abstract
In this paper, we investigated redox behavior of Iâ and I3â in 3-methoxypropionitrile (MePN) with different concentrations of 1-methyl-3-propylimidazolium iodide (MPII) and iodine by cyclic voltammetry and electrochemical impedance spectroscopy. It was found that the apparent diffusion coefficient (D) values of triiodide and iodide ions, the serial resistance (Rs) and the charge-transfer resistance (Rct) decreased slightly with increase of the concentration of I3â in MePN containing 1.4 M MPII. Moreover, the Rct and D values of triiodide and iodide ions affection on dye-sensitized solar cells (DSCs) should be considered as a whole. The DSCs with the electrolyte (1.4 M MPII, 0.1 M LiI, 0.1 M I2, 0.5 M TBP, in MePN) gave short circuit photocurrent density (Jsc) of 14.44 mA/cm2, open circuit voltage (Voc) of 0.72 V, and fill factor (FF) of 0.69, corresponding to the photoelectric conversion efficiency (η) of 7.17% under one Sun (AM1.5).
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Shi Chengwu, Dai Songyuan, Wang Kongjia, Pan Xu, Guo Li, Zeng Longyue, Hu Linhua, Kong Fantai,