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A quasi-liquid polymer-based cobalt redox mediator electrolyte for dye-sensitized solar cells
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
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2013 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 15, no 40, 17419-17425 p.Article in journal (Refereed) Published
Abstract [en]

Recently, cobalt redox electrolyte mediators have emerged as a promising alternative to the commonly used iodide/triiodide redox shuttle in dye-sensitized solar cells (DSCs). Here, we report the successful use of a new quasi-liquid, polymer-based electrolyte containing the Co3+/Co2+ redox mediator in 3-methoxy propionitrile solvent in order to overcome the limitations of high cell resistance, low diffusion coefficient and rapid recombination losses. The performance of the solar cells containing the polymer based electrolytes increased by a factor of 1.2 with respect to an analogous electrolyte without the polymer. The performances of the fabricated DSCs have been investigated in detail by photovoltaic, transient electron measurements, EIS, Raman and UV-vis spectroscopy. This approach offers an effective way to make high-performance and long-lasting DSCs.

Place, publisher, year, edition, pages
2013. Vol. 15, no 40, 17419-17425 p.
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-210764DOI: 10.1039/c3cp52869cISI: 000325398500047OAI: oai:DiVA.org:uu-210764DiVA: diva2:664156
Available from: 2013-11-14 Created: 2013-11-14 Last updated: 2013-11-14Bibliographically approved

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Vlachopoulos, Nikolaos
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