Issue 2, 2011
From the journal:

Chemical Communications

Dynamics of photogenerated holes in nanocrystalline α-Fe2O3 electrodes for water oxidation probed by transient absorption spectroscopy†

Stephanie R. Pendlebury,a   Monica Barroso,*a   Alexander J. Cowan,a   Kevin Sivula,b   Junwang Tang,c   Michael Grätzel,b   David Kluga  and  James R. Durrant*a  

* Corresponding authors

a Department of Chemistry, Imperial College London, Exhibition Road, London, UK
E-mail: j.durrant@imperial.ac.uk, m.barroso@imperial.ac.uk

b Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland

c Department of Chemical Engineering, University College London, London, UK

Abstract

Transient absorption spectroscopy on the μs–s time scale is used to monitor the yield and decay dynamics of photogenerated holes in nanocrystalline hematite photoanodes. In the absence of a positive applied bias, these holes are observed to undergo rapid electron–hole recombination. The application of a positive bias results in the generation of long-lived (3 ± 1 s lifetime) photoholes.

Graphical abstract: Dynamics of photogenerated holes in nanocrystalline α-Fe2O3 electrodes for water oxidation probed by transient absorption spectroscopy

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Article information

DOI
https://doi.org/10.1039/C0CC03627G
Article type
Communication
Submitted
02 Sep 2010
Accepted
26 Oct 2010
First published
11 Nov 2010

Chem. Commun., 2011,47, 716-718

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Dynamics of photogenerated holes in nanocrystalline α-Fe2O3 electrodes for water oxidation probed by transient absorption spectroscopy

S. R. Pendlebury, M. Barroso, A. J. Cowan, K. Sivula, J. Tang, M. Grätzel, D. Klug and J. R. Durrant, Chem. Commun., 2011, 47, 716 DOI: 10.1039/C0CC03627G

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