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Issue 40, 2013
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A quasi-liquid polymer-based cobalt redox mediator electrolyte for dye-sensitized solar cells

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Abstract

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.

Graphical abstract: A quasi-liquid polymer-based cobalt redox mediator electrolyte for dye-sensitized solar cells

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Publication details

The article was received on 29 May 2013, accepted on 16 Aug 2013 and first published on 19 Aug 2013


Article type: Paper
DOI: 10.1039/C3CP52869C
Citation: Phys. Chem. Chem. Phys., 2013,15, 17419-17425
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    A quasi-liquid polymer-based cobalt redox mediator electrolyte for dye-sensitized solar cells

    M. Bhagavathi Achari, V. Elumalai, N. Vlachopoulos, M. Safdari, J. Gao, J. M. Gardner and L. Kloo, Phys. Chem. Chem. Phys., 2013, 15, 17419
    DOI: 10.1039/C3CP52869C

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