Voltage and frequency dependent impedances of dye-sensitized solar cell

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Abstract

This paper describes a derivation of the dynamic impedance of a dye-sensitized solar cell (DSSC) and its characterization using a frequency response analyzer (FRA). The dynamic impedance equation as a function of voltage and frequency is presented. Testing is done on a DSSC, fabricated from a fluorine-doped SnO2(FTO) conducting glass, ruthenium (II) dye (N719) sensitized TiO2nanoparticles, an iodide-triiodide electrolyte, and a Pt counter electrode. At each bias voltage, impedance locus is plotted in a complex plane. Intercepts of each semicircular impedance loci yield series, dynamic, and shunt resistance of the cell. Experimental results could be used to analyze characteristics of AC equivalent circuit components. © 2014 Published by Elsevier Ltd.

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Pongklang, T., Chenvidhya, D., Kirtikara, K., Chuangchote, S., & Silsirivanich, N. (2014). Voltage and frequency dependent impedances of dye-sensitized solar cell. In Energy Procedia (Vol. 52, pp. 536–540). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2014.07.107

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