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Catechol as an efficient anchoring group for attachment of ruthenium–polypyridine photosensitisers to solar cells based on nanocrystalline TiO2 films

By Craig R. Rice, Michael D. Ward, Mohammed K. Nazeeruddin and Michael Gratzel

Abstract

The Ru(II)–polypyridyl complexes [Ru(H2L)(terpy)][PF6]2 (1) and [Bu4N][Ru(H2L)(NCS)3] (2) (H2L=4-(3,4-dihydroxyphenyl)-2,2:6,2-terpyridine), in which H2L is coordinated as a terpyridyl fragment with a catechol site pendant from the C4 position, adhere effectively to nanocrystalline TiO2 (anatase) surfaces via the pendant catechol group; incident photon-to-current conversion efficiency values of up to 50% were obtained in their photocurrent action spectra, suggesting that the catechol unit may be a convenient and effective anchoring group for attaching dyes to TiO2-based photovoltaic cells

Topics: Q1, QD
Publisher: Royal Society of Chemistry
Year: 2000
DOI identifier: 10.1039/b003823g
OAI identifier: oai:eprints.hud.ac.uk:2270
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