Electrochemical Impedance Spectroscopic Study on DSSC Sensitized with Begonia malabarica Lam.

Abstract:

Electrochemical Impedance Spectroscopic studies of dye sensitized solar cells fabricated using Begonia malabarica Lam. as sensitizer has been carried out. Various electrochemical parameters such as charge transport resistance at the TiO₂/dye/electrolyte interface, recombination resistance, chemical capacitance, transient diffusion coefficient, diffusion length and time constant, were calculated using Diffusion-recombination transmission line model. The evaluation of these parameters provides the underlying charge transport mechanism for the present cell. The reported cell has an efficiency of 1.74 % and fill factor of 45%.

• Periodical: Materials Science Forum (Volume 771)
• Pages: 133-141
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.771.133
• Online since: October 2013
• Authors: Lakshmi K. Singh, Tado Karlo, Arvind Pandey
• Keywords: Chemical Capacitance, Dye-Sensitized Solar Cell, Electrochemical Impedance Spectroscopy (EIS), Recombination Resistance

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