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Chem. Commun., 2009, 7146 - 7148, DOI: 10.1039/b912506j

Design and synthesis of a novel anchoring ligand for highly efficient thin film dye-sensitized solar cells

Amaresh Mishra, Nuttapol Pootrakulchote, Markus K. R. Fischer, Cedric Klein, Md. K. Nazeeruddin, Shaik M. Zakeeruddin, Peter Bäuerle and Michael Grätzel

A novel ligand, 5,5-(2,2-bipyridine-4,4-diyl)-bis(thiophene-2-carboxylic acid) (BTC), and its RuII complex (BTC-1) in which the anchoring group is attached to the thiophene units were developed. Using a low-volatility electrolyte and 3.3 m mesoporous TiO2 films BTC-1 achieved a solar-to-electricity conversion efficiency of 6.1%, compared to 4.8% for N719 under the same experimental conditions.

Graphical abstract image for this article (ID: b912506j)