title: Tailoring Multilayered BiVO4 Photoanodes by Pulsed Laser Deposition for Water Splitting.
abstract: Pulsed laser deposition (PLD) is proposed as promising technique for the fabrication of multilayered BiVO4-based photoanodes. For this purpose, bare BiVO4 films and two heterojunctions, BiVO4/SnO2 and BiVO4/WO3/SnO2, have been prepared using consecutive ablation of assorted targets in a single batch. The ease, high versatility and usefulness of this technique in engineering the internal configuration of the photoanode with stoichiometric target-to-substrate transfer are demonstrated. The obtained photocurrent densities are among the highest reported values for undoped BiVO4 without oxygen evolution catalysts (OEC). A detailed analysis of the influence of SnO2 and WO3 layers on the charge transport properties because of the changes at the internal FTO/semiconductor interface is performed through transient photocurrent measurements (TPC), showing that the BiVO4/WO3/SnO2 heterostructure attains a significant decrease in the internal losses and reaches high photocurrent values. This study is expected to open the door to the fabrication of other systems based on ternary (or even more complex) metal oxides as photoanodes for water splitting, which is a promising alternative for obtaining materials able to fulfill the different requierements in the development of more efficient systems for this process.
authors.affiliation: Department of Advanced Materials for Energy, Catalonia Institute for Energy Research (IREC) , Jardins de les Dones de Negre, 1, 08930 Sant Adrià de Besòs, Catalonia, Spain.
authors.forename: Sebastián
authors.initials: S
authors.lastname: Murcia-López
authors.affiliation: Department of Advanced Materials for Energy, Catalonia Institute for Energy Research (IREC) , Jardins de les Dones de Negre, 1, 08930 Sant Adrià de Besòs, Catalonia, Spain.
authors.forename: Cristian
authors.initials: C
authors.lastname: Fàbrega
authors.affiliation: Department of Advanced Materials for Energy, Catalonia Institute for Energy Research (IREC) , Jardins de les Dones de Negre, 1, 08930 Sant Adrià de Besòs, Catalonia, Spain.
authors.forename: Damián
authors.initials: D
authors.lastname: Monllor-Satoca
authors.affiliation: Repsol Technology Center , Carretera de Extremadura A-5, km 18, 28935 Móstoles, Madrid, Spain.
authors.forename: María D
authors.initials: MD
authors.lastname: Hernández-Alonso
authors.affiliation: Repsol Technology Center , Carretera de Extremadura A-5, km 18, 28935 Móstoles, Madrid, Spain.
authors.forename: Germán
authors.initials: G
authors.lastname: Penelas-Pérez
authors.affiliation: Department of Advanced Materials for Energy, Catalonia Institute for Energy Research (IREC) , Jardins de les Dones de Negre, 1, 08930 Sant Adrià de Besòs, Catalonia, Spain.
authors.forename: Alex
authors.initials: A
authors.lastname: Morata
authors.affiliation: Department of Advanced Materials for Energy, Catalonia Institute for Energy Research (IREC) , Jardins de les Dones de Negre, 1, 08930 Sant Adrià de Besòs, Catalonia, Spain.|Department of Electronics, Universitat de Barcelona (UB) , Martí i Franquès, 1, 08028 Barcelona, Catalonia,them Spain.
authors.forename: Juan R
authors.initials: JR
authors.lastname: Morante
authors.affiliation: Department of Advanced Materials for Energy, Catalonia Institute for Energy Research (IREC) , Jardins de les Dones de Negre, 1, 08930 Sant Adrià de Besòs, Catalonia, Spain.
authors.forename: Teresa
authors.initials: T
authors.lastname: Andreu
keywords: BiVO4; WO3; pulsed laser deposition; solar energy; water photosplitting