title: A H2-evolving photocathode based on direct sensitization of MoS3 with an organic photovoltaic cell.
abstract: An organic solar cell based on a poly-3-hexylthiophene (P3HT): phenyl-C61-butyric acid (PCBM) bulk hetero-junction was directly coupled with molybdenum sulfide resulting in the design of a new type of photocathode for the production of hydrogen. Both the light-harvesting system and the catalyst were deposited by low-cost solution-processed methods, i.e. spin coating and spray coating respectively. Spray-coated MoS3films are catalytically active in strongly acidic aqueous solutions with the best efficiencies for thicknesses of 40 to 90 nm. The photocathodes display photocurrents higher than reference samples, without catalyst or without coupling with a solar cell. Analysis by gas chromatography confirms the light-induced hydrogen evolution. The addition of titanium dioxide in the MoS3film enhances electron transport and collection within thick films and therefore the performance of the photocathode.
authors.affiliation: CEA-Saclay, DSM/IRAMIS/SPCSI/Laboratoire de Chimie des Surfaces et Interfaces, 91191 Gif sur Yvette Cedex, France.
authors.forename: Tiphaine
authors.initials: T
authors.lastname: Bourgeteau
authors.affiliation: Laboratoire de Physique des Interfaces et Couches Minces, Ecole Polytechnique, CNRS, 91128 Palaiseau, France.
authors.forename: Denis
authors.initials: D
authors.lastname: Tondelier
authors.affiliation: CEA-Saclay, DSM/IRAMIS/SPCSI/Laboratoire de Chimie des Surfaces et Interfaces, 91191 Gif sur Yvette Cedex, France ; Laboratoire de Physique des Interfaces et Couches Minces, Ecole Polytechnique, CNRS, 91128 Palaiseau, France.
authors.forename: Bernard
authors.initials: B
authors.lastname: Geffroy
authors.affiliation: CEA-Saclay, DSM/IRAMIS/SPCSI/Laboratoire de Chimie des Surfaces et Interfaces, 91191 Gif sur Yvette Cedex, France.
authors.forename: Romain
authors.initials: R
authors.lastname: Brisse
authors.affiliation: Laboratoire de Chimie de la Matière Condensée de Paris-UMR 7574, Université Paris 6, Collège de France, 11 place Marcelin Berthelot 75005, Paris, France.
authors.forename: Christel
authors.initials: C
authors.lastname: Laberty-Robert
authors.affiliation: CEA-Saclay, DSM/IRAMIS/SPCSI/Laboratoire de Chimie des Surfaces et Interfaces, 91191 Gif sur Yvette Cedex, France.
authors.forename: Stéphane
authors.initials: S
authors.lastname: Campidelli
authors.affiliation: INES, CEA-DRT/LITEN/DTS/LMPV, Institut National de l'Energie Solaire, Le Bourget du Lac, France.
authors.forename: Rémi
authors.initials: R
authors.lastname: de Bettignies
authors.affiliation: Laboratoire de Chimie et Biologie des Métaux, Université Grenoble 1, CNRS, CEA, 17 rue des Martyrs 38054, Grenoble Cedex 9, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Artero
authors.affiliation: CEA-Saclay, DSM/IRAMIS/SPCSI/Laboratoire de Chimie des Surfaces et Interfaces, 91191 Gif sur Yvette Cedex, France.
authors.forename: Serge
authors.initials: S
authors.lastname: Palacin
authors.affiliation: CEA-Saclay, DSM/IRAMIS/SPCSI/Laboratoire de Chimie des Surfaces et Interfaces, 91191 Gif sur Yvette Cedex, France.
authors.forename: Bruno
authors.initials: B
authors.lastname: Jousselme