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Issue 7, 2011
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Redox couple related influences of π-conjugation extension in organic dye-sensitized mesoscopic solar cells

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Abstract

The iodide/triiodide redox shuttle is an unparalleled option in making efficient dye-sensitized solar cells (DSCs) but also presents some prominent constraints on the development of new photosensitizers, semiconductors and counter electrodes. In this paper, a cobalt electrolyte has been identified to offer an advantageous impact of π-conjugation extension in push–pull organic dyes, upon the interfacial charge recombination kinetics and thus the open-circuit photovoltage of DSCs, in sharp contrast with the conventional iodine congener. The usage of a solely visible-light-absorption dye has generated a DSC free of corrosive iodine, exhibiting an impressive overall power conversion efficiency of 8.0% at the 100 mW cm−2 AM1.5G conditions.

Graphical abstract: Redox couple related influences of π-conjugation extension in organic dye-sensitized mesoscopic solar cells

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Publication details

The article was received on 30 Mar 2011, accepted on 28 Apr 2011 and first published on 17 May 2011


Article type: Edge Article
DOI: 10.1039/C1SC00199J
Citation: Chem. Sci., 2011,2, 1401-1406
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    Redox couple related influences of π-conjugation extension in organic dye-sensitized mesoscopic solar cells

    M. Zhang, J. Liu, Y. Wang, D. Zhou and P. Wang, Chem. Sci., 2011, 2, 1401
    DOI: 10.1039/C1SC00199J

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