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

Fiona A. Black, Christopher J. Wood, Simbarashe Ngwerume, Gareth H. Summers, Ian P. Clark, Michael Towrie, Jason E. Camp, Elizabeth A. Gibson

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

This article describes a comparison between the photophys. 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 sensitized 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. [on SciFinder(R)]
Original languageEnglish
Pages (from-to)449-461
Number of pages13
JournalFaraday Discussions
Volume198
Early online date4 Jan 2017
DOIs
Publication statusE-pub ahead of print - 4 Jan 2017

Keywords

  • dye semiconductor interface photocathode solar energy charge transfer

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