title: Dynamics of photogenerated holes in nanocrystalline α-Fe2O3 electrodes for water oxidation probed by transient absorption spectroscopy.
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.
authors.affiliation: Department of Chemistry, Imperial College London, Exhibition Road, London, UK SW7 2AZ.
authors.forename: Stephanie R
authors.initials: SR
authors.lastname: Pendlebury
authors.forename: Monica
authors.initials: M
authors.lastname: Barroso
authors.forename: Alexander J
authors.initials: AJ
authors.lastname: Cowan
authors.forename: Kevin
authors.initials: K
authors.lastname: Sivula
authors.forename: Junwang
authors.initials: J
authors.lastname: Tang
authors.forename: Michael
authors.initials: M
authors.lastname: Grätzel
authors.forename: David
authors.initials: D
authors.lastname: Klug
authors.forename: James R
authors.initials: JR
authors.lastname: Durrant