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International Journal of Photoenergy
Volume 2013 (2013), Article ID 646407, 10 pages
http://dx.doi.org/10.1155/2013/646407
Research Article

Effect of Varying Illumination and Temperature on Steady-State and Dynamic Parameters of Dye-Sensitized Solar Cell Using AC Impedance Modeling

1School of Technology, Pandit Deendayal Petroleum University, Gandhinagar 382007, India
2School of Solar Energy, Pandit Deendayal Petroleum University, Gandhinagar 382007, India

Received 29 May 2013; Revised 24 July 2013; Accepted 28 July 2013

Academic Editor: Wayne A. Anderson

Copyright © 2013 Brijesh Tripathi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The steady-state current-voltage curve and dynamic response of a dye-sensitized solar cell (DSSC) is mathematically modeled based on electrical equivalent circuit. The effect of temperature and illumination on the steady-state and dynamic parameters of dye-sensitized solar cells is studied. It is found that the dynamic resistance of DSSC decreases from 619.21  to 90.34  with the increase in illumination level from 200 W/m2 to 800 W/m2. A positive temperature coefficient of dynamic resistance is observed. The interfacial charge transfer and recombination losses at the oxide/dye/electrolyte interface are found to be the most influential factor on the overall conversion efficiency and included in the mathematical model. The saturation current of rectifying diode and saturation current of recombination diode are responsible for the transfer recombination losses and have major influence on the overall conversion efficiency.