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Advances in Materials Science and Engineering
Volume 2014 (2014), Article ID 974782, 12 pages
http://dx.doi.org/10.1155/2014/974782
Review Article

Recent Advances in Dye Sensitized Solar Cells

1Department of Chemical Engineering, King Fahd University of Petroleum & Minerals (KFUPM), P.O. Box 5050, Dhahran 31261, Saudi Arabia
2Department of Physics, KFUPM, P.O. Box 5050, Dhahran 31261, Saudi Arabia
3Indian Institute of Chemical Technology, Hyderabad, India

Received 28 December 2013; Revised 22 March 2014; Accepted 22 March 2014; Published 17 April 2014

Academic Editor: Chi-Wai Chow

Copyright © 2014 Umer Mehmood 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

Solar energy is an abundant and accessible source of renewable energy available on earth, and many types of photovoltaic (PV) devices like organic, inorganic, and hybrid cells have been developed to harness the energy. PV cells directly convert solar radiation into electricity without affecting the environment. Although silicon based solar cells (inorganic cells) are widely used because of their high efficiency, they are rigid and manufacturing costs are high. Researchers have focused on organic solar cells to overcome these disadvantages. DSSCs comprise a sensitized semiconductor (photoelectrode) and a catalytic electrode (counter electrode) with an electrolyte sandwiched between them and their efficiency depends on many factors. The maximum electrical conversion efficiency of DSSCs attained so far is 11.1%, which is still low for commercial applications. This review examines the working principle, factors affecting the efficiency, and key challenges facing DSSCs.