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Citation: SHI Cheng-Wu, GE Qian, LI Bing, TAO Li, LIU Qing-An. Influence of Additives on the Performance of Electrolytes in Dye-Sensitized Solar Cells[J]. Acta Physico-Chimica Sinica, ;2008, 24(12): 2327-2330. doi: 10.3866/PKU.WHXB20081230 shu

Influence of Additives on the Performance of Electrolytes in Dye-Sensitized Solar Cells

1.
School of Chemical Engineering, Hefei University of Technology, Hefei 230009, P. R. China

Received Date: 1 July 2008
Available Online: 27 October 2008

The influence of N-methylimidazole, benzimidazole, 4-tert-butylpyrdine and 3-ethyl-1-methyl-limidazoliumtrifluoroacetate (EMITA) on apparent diffusion coefficients of I-3 and I- in the electrolyte and the Pt counter electrode electrolyte interface was investigated by ultramicroelectrode and electrochemical impedance spectroscopy. The apparent diffusion coefficient of I-3 in the electrolyte decreased and charge transfer resistance at the Pt counter electrode electrolyte interface increased after the additives were added. The resistance of electrolytes decreased after addition of EMITA. A comparison of the photovoltaic performance of dye-sensitized solar cells (DSCs) containing the additives was undertaken. The additive EMITA increased the open voltage and the fill factor, and the efficiency of dye-sensitized solar cells was up to 5.72%.
- Additive,
- Dye-sensitized solar cell,
- Pt counter electrode,
- Electrochemical impedance spectroscopy,
- Ultramicroelectrode
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