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International Journal of Photoenergy
Volume 2011 (2011), Article ID 960487, 5 pages
http://dx.doi.org/10.1155/2011/960487
Research Article

Performance of Dye-Sensitized Solar Cells with (PVDF-HFP)-KI-EC-PC Electrolyte and Different Dye Materials

1Centre for Foundation Studies, International Islamic University Malaysia, Jalan Universiti, 46350 Petaling Jaya, Selangor, Malaysia
2Department of Physics, Centre for Ionics University Malaya, University of Malaya, 50603 Kuala Lumpur, Malaysia
3Department of Physics, University of Peradeniya, 20400 Peradeniya, Sri Lanka

Received 8 July 2011; Revised 20 September 2011; Accepted 20 September 2011

Academic Editor: Leonardo Palmisano

Copyright © 2011 M. M. Noor 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

A plasticized polymer electrolyte system composed of PVDF-HFP, potassium iodide (KI), and equal weight of ethylene carbonate (EC) and propylene carbonate (PC) has been used in a dye-sensitized solar cell (DSSC). The electrolyte with the composition 40 wt. % PVDF-HFP-10 wt. % KI-50 wt. % (EC + PC) exhibits the highest room temperature ionic conductivity of 1.10 × 10−3 S cm−1. A small amount of iodine crystal of about 10 wt. % of KI was added to the electrolyte in the liquid state to provide the redox couple for DSSC operation. The polymer electrolyte films were prepared by the solvent casting method. The DSSCs were fabricated with the electrolyte film sandwiched between a TiO2/dye photoelectrode and a Pt-counter electrode and characterized under 100 mW cm−2 white light. The DSSC performance with different dyes such as Ruthenizer 535 (N3), anthocyanin, chlorophyll, and a mixture of anthocyanin and chlorophyll () has been compared. The DSSC with Ruthenizer 535 (N3) dye exhibits the best performance with a short-circuit current density of 8.16 mA cm−2, open-circuit voltage of 0.76 V, fill factor of 0.35, and photoconversion efficiency of 2.2%.