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.


Publié dans:
Dalton Transactions, 43, 40, 15085-15091
Année
2014
Publisher:
Cambridge, Royal Society of Chemistry
ISSN:
1477-9226
Laboratoires:




 Notice créée le 2014-11-13, modifiée le 2018-12-03


Évaluer ce document:

Rate this document:
1
2
3
 
(Pas encore évalué)