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Issue 46, 2011
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Electron-rich heteroaromatic conjugated polypyridine ruthenium sensitizers for dye-sensitized solar cells

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Abstract

Ru(II) heteroleptic complexes as photosensitizers for dye-sensitized solar cells (DSCs) are presented. The article outlines design strategies, synthetic routes, optical and photovoltaic properties of ruthenium dyes based on polypyridines as ancillary ligands containing π-conjugated electron-rich heteroaromatic groups. The integration of donor heteroaromatic substituents, typically thiophene-based moieties, strongly improves the optical properties of the sensitizers in terms of bathochromic and hyperchromic shift compared to prototypical dyes N3 and N719. These favorable properties in turn yield DSCs with superior light harvesting abilities, higher external quantum efficiencies, improved device photocurrents, and top-ranked power conversion efficiencies. In combination with excellent stabilities under thermal stress and light soaking, this class of DSC photosensitizer has great potential for practical applications.

Graphical abstract: Electron-rich heteroaromatic conjugated polypyridine ruthenium sensitizers for dye-sensitized solar cells

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Publication details

The article was received on 04 May 2011, accepted on 23 Jun 2011 and first published on 11 Aug 2011


Article type: Perspective
DOI: 10.1039/C1DT10832H
Citation: Dalton Trans., 2011,40, 12421-12438

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    Electron-rich heteroaromatic conjugated polypyridine ruthenium sensitizers for dye-sensitized solar cells

    A. Abbotto and N. Manfredi, Dalton Trans., 2011, 40, 12421
    DOI: 10.1039/C1DT10832H

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