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Issue 6, 2013
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Long-lived charge separated states in nanostructured semiconductor photoelectrodes for the production of solar fuels

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Abstract

The efficient use of sunlight to drive the production of solar fuels requires the photogeneration of suitably long-lived charge separated states capable of driving the multi-electron chemistry of fuel synthesis. Here we discuss a range of promising material design approaches to increasing charge carrier lifetimes, focusing upon semiconductor photoelectrodes for water photolysis and carbon dioxide reduction. Parallels are drawn between the strategies deployed in the development of such artificial systems and those found in natural photosynthesis. We address the use of a range of junctions, including electrolyte/semiconductor, semiconductor/semiconductor and dye sensitized interfaces to provide the spatial separation of charges. A key consideration of the review is the design of such interfaces to achieve a sufficient increase in charge carrier lifetime with a high quantum yield, whilst minimising the energy loss associated with this lifetime gain.

Graphical abstract: Long-lived charge separated states in nanostructured semiconductor photoelectrodes for the production of solar fuels

  • This article is part of the themed collection: Solar fuels
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Publication details

The article was received on 01 Aug 2012 and first published on 28 Sep 2012


Article type: Review Article
DOI: 10.1039/C2CS35305A
Chem. Soc. Rev., 2013,42, 2281-2293

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    Long-lived charge separated states in nanostructured semiconductor photoelectrodes for the production of solar fuels

    A. J. Cowan and J. R. Durrant, Chem. Soc. Rev., 2013, 42, 2281
    DOI: 10.1039/C2CS35305A

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