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Issue 40, 2014
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Branched and bulky substituted ruthenium sensitizers for dye-sensitized solar cells

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Abstract

We report on the synthesis, and photovoltaic performances of four novel Ru(II)-bipyridine heteroleptic complexes TT206–209, incorporating branched and bulkier alkyl chains compared to their linear analogues C106 and CYC-B11 previously reported. In both series, we found that dyes containing 2-methyl-hex-2-yl substitution gave better performances than 1,1-dipropylbutyl. The best overall performance over the four dyes was obtained for TT207 (CYC-B11 analogue), which contains 2-methylhex-2-yl type substitution, achieving an overall PCE of 8.5%. Furthermore, the optimization of TT207/DSSCs, with respect to the dye-uptake solvent and electrolyte composition, led to a maximum PCE of 9.1% under AM1.5 G standard conditions.

Graphical abstract: Branched and bulky substituted ruthenium sensitizers for dye-sensitized solar cells

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Publication details

The article was received on 07 May 2014, accepted on 15 Aug 2014 and first published on 15 Aug 2014


Article type: Paper
DOI: 10.1039/C4DT01357C
Citation: Dalton Trans., 2014,43, 15085-15091
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    Branched and bulky substituted ruthenium sensitizers for dye-sensitized solar cells

    M. Sánchez Carballo, M. Urbani, A. K. Chandiran, D. González-Rodríguez, P. Vázquez, M. Grätzel, M. K. Nazeeruddin and T. Torres, Dalton Trans., 2014, 43, 15085
    DOI: 10.1039/C4DT01357C

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