Volume 198, 2017

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

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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Article information

Article type
Paper
Submitted
07 Nov 2016
Accepted
04 Jan 2017
First published
04 Jan 2017
This article is Open Access
Creative Commons BY license

Faraday Discuss., 2017,198, 449-461

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, 198, 449 DOI: 10.1039/C6FD00228E

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