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Charge-transfer dynamics at the dye–semiconductor interface of photocathodes for solar energy applications

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Abstract

This article describes a comparison between the photophysical properties of two charge-transfer dyes adsorbed onto NiO via two different binding moieties. Transient spectroscopy measurements suggest that the structure of the anchoring group affects both the rate of charge recombination between the dye and NiO surface and the rate of dye regeneration by an iodide/triiodide redox couple. This is consistent with the performance of the dyes in p-type dye sensitised solar cells. A key finding was that the recombination rate differed in the presence of the redox couple. These results have important implications on the study of electron transfer at dye|semiconductor interfaces for solar energy applications.

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Publication details

The article was received on 07 Nov 2016, accepted on 04 Jan 2017, published on 04 Jan 2017 and first published online on 04 Jan 2017


Article type: Paper
DOI: 10.1039/C6FD00228E
Citation: Faraday Discuss., 2017, Advance Article
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    Charge-transfer dynamics at the dye–semiconductor interface of photocathodes for solar energy applications

    F. A. Black, C. J. Wood, S. Ngwerume, G. H. Summers, I. P. Clark, M. Towrie, J. E. Camp and E. A. Gibson, Faraday Discuss., 2017, Advance Article , DOI: 10.1039/C6FD00228E

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