Voltage and frequency dependent impedances of dye-sensitized solar cell
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Author list: Pongklang T., Chenvidhya D., Kirtikara K., Chuangchote S., Silsirivanich N.
Publisher: Elsevier
Publication year: 2014
Volume number: 52
Start page: 536
End page: 540
Number of pages: 5
ISSN: 1876-6102
eISSN: 1876-6102
Languages: English-Great Britain (EN-GB)
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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 TiO2 nanoparticles, 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. ฉ 2014 Published by Elsevier Ltd.
Keywords
Dynamic impedance model, Equivalent circuit
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