Dynamics of photogenerated holes in nanocrystalline alpha-Fe2O3 electrodes for water oxidation probed by transient absorption spectroscopy
2011
Abstract
Transient absorption spectroscopy on the mu s-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.
Details
Title
Dynamics of photogenerated holes in nanocrystalline alpha-Fe2O3 electrodes for water oxidation probed by transient absorption spectroscopy
Author(s)
Pendlebury, Stephanie R. ; Barroso, Monica ; Cowan, Alexander J. ; Sivula, Kevin ; Tang, Junwang ; Graetzel, Michael ; Klug, David ; Durrant, James R.
Published in
Chemical Communications
Volume
47
Pages
716-718
Date
2011
Keywords
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Laboratories
LPI
Record Appears in
Scientific production and competences > SB - School of Basic Sciences > ISIC - Institute of Chemical Sciences and Engineering > LPI - Laboratory of Photonics and Interfaces
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date
2011-06-08