Publication Type:

Journal Article

Source:

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

URL:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84897708289&partnerID=40&md5=04d6387efd23d3b4e7a2b3eeb1c3bfc4

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

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.

Notes:

cited By 87

Cite this Research Publication

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

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