Study on Determination of I-V Curve of Dye-Sensitized Solar Cell

Abstract:

Many studies reported that dye-sensitized solar cells have more significant capacitance characteristics than the silicon solar cell. In this study, it was found the capacitance characteristics of dye-sensitized solar cell changes with the imposed bias voltage. The bias voltage is indispensable in the standard measurement for the conversion efficiency of dye-sensitized solar cell. The influence of changed capacitance during the measurement on the conversion efficiency of dye-sensitized solar cells was investigated. The analysis on the EIS spectra and equivalent circuit shows that the capacitance of dye-sensitized solar cells is small and the deviation cell I-V characteristics from the steady-state value is minor when the applied bias is small; while under a condition with a large applied bias, the capacitance characteristics of dye-sensitized solar cell grew rapidly and the I-V characteristics deviated from the steady-state value significantly increased. This phenomenon is helpful for the accurate measurement of the quantum conversion efficiency and photoelectric conversion efficiency of dye-sensitized solar cells.

• Periodical: Materials Science Forum (Volume 685)
• Pages: 13-19
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.685.13
• Online since: June 2011
• Authors: Han Min Tian, Tao Yu, Zhi Gang Zou
• Keywords: Dye Sensitized Solar Cell (DSSC), EIS, Equivalent Circuit, Internal Resistance

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