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

We report on the synthesis, and photovoltaic performances of four novel Ru(II)-bipyridine heteroteptic 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.


Published in:
Dalton Transactions, 43, 40, 15085-15091
Year:
2014
Publisher:
Cambridge, Royal Society of Chemistry
ISSN:
1477-9226
Laboratories:




 Record created 2014-11-13, last modified 2018-09-13


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