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A review on counter electrode materials in dye-sensitized solar cells

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : Journal of Materials Chemistry A

Source : Journal of Materials Chemistry A, Volume 2, Number 13, p.4474-4490 (2014)

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Keywords : Counter electrode materials, Counter electrodes, Dye-Sensitized solar cell, Fluorine doped tin oxide (FTO), Future prospects, Nanocomposites, Overall efficiency, Photoelectrochemical cells, Photoexcited electrons, Platinum, Redox couple, Solar cells, Surface roughness, Titanium oxides

Campus : Kochi

School : Center for Nanosciences

Center : Amrita Center for Policy Research, Nanosciences

Department : Nanosciences and Molecular Medicine

Year : 2014

Abstract : Dye-sensitized solar cells (DSCs) present promising low-cost alternatives to the conventional silicon (Si)-based solar cells. A DSC consists of several components, the most prominent being a titanium dioxide/metal oxide-based photoanode, a dye, an electrolyte and a counter electrode. The photoexcited electrons from the dye diffuse through the TiO2 network in the photoanode and go to the counter electrode which generally consists of platinum (Pt) sputtered onto a fluorine-doped tin oxide (FTO) plate. The Pt in the counter electrode helps in the regeneration of dyes by catalysing the I - regeneration from the I3 - species in the redox couple. The morphology of Pt, its surface roughness, nature of the exposed facet, etc. play a crucial role in determining the overall efficiency of a DSC device. With Pt being a costly noble metal, reasonable efforts have been made to find cheaper alternatives. The review presented below gives a succinct summary of the materials in use as counter electrodes in DSCs, with a conclusion and future prospects section.

Cite this Research Publication : S. Thomas, Deepak, T. G., Anjusree, G. S., Arun, T. A., Nair, S. V., and A. S. Nair, “A review on counter electrode materials in dye-sensitized solar cells”, Journal of Materials Chemistry A, vol. 2, pp. 4474-4490, 2014. DOI:

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