An easily accessible homoleptic complex [Ru(L3)3]2+ containing a dissymmetrical bipyridine (L3) substituted by a pyrrole and a carboxylic group has been evaluated in a dye-sensitized solar cell. The new dye displayed extended absorption domain, high absorbance, and a promising 65% IPCE value. Higher scores were reached using a cobalt-iron mediator instead of the usual LiI/I2 couple for regeneration of the RuII state. Transient absorption spectroscopy was used to explain the mediator effect.
Homoleptic ruthenium complex bearing dyssimetrical 4-carboxy-4’pyrrolo-2,2’bipyridine for efficient sensitization in of TiO2 in solar cells
CARAMORI, Stefano;BIGNOZZI, Carlo Alberto
2009
Abstract
An easily accessible homoleptic complex [Ru(L3)3]2+ containing a dissymmetrical bipyridine (L3) substituted by a pyrrole and a carboxylic group has been evaluated in a dye-sensitized solar cell. The new dye displayed extended absorption domain, high absorbance, and a promising 65% IPCE value. Higher scores were reached using a cobalt-iron mediator instead of the usual LiI/I2 couple for regeneration of the RuII state. Transient absorption spectroscopy was used to explain the mediator effect.File in questo prodotto:
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