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Issue 9, 2013
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A H2-evolving photocathode based on direct sensitization of MoS3 with an organic photovoltaic cell

Tiphaine Bourgeteau,a  Denis Tondelier,b  Bernard Geffroy,ab  Romain Brisse,a  Christel Laberty-Robert,c  Stéphane Campidelli,a  Rémi de Bettignies,d  Vincent Artero,e  Serge Palacina  and  Bruno Jousselme*a 
Author affiliations

* Corresponding authors

a CEA-Saclay, DSM/IRAMIS/SPCSI/Laboratoire de Chimie des Surfaces et Interfaces, 91191 Gif sur Yvette Cedex, France
E-mail: bruno.jousselme@cea.fr
Fax: +33 169086462
Tel: +33 169089191

b Laboratoire de Physique des Interfaces et Couches Minces, Ecole Polytechnique, CNRS, 91128 Palaiseau, France

c Laboratoire de Chimie de la Matière Condensée de Paris-UMR 7574, Université Paris 6, Collège de France, 11 place Marcelin Berthelot 75005, Paris, France

d INES, CEA-DRT/LITEN/DTS/LMPV, Institut National de l'Energie Solaire, Le Bourget du Lac, France

e Laboratoire de Chimie et Biologie des Métaux, Université Grenoble 1, CNRS, CEA, 17 rue des Martyrs 38054, Grenoble Cedex 9, France

Abstract

An organic solar cell based on a poly-3-hexylthiophene (P3HT):phenyl-C61-butyric acid (PCBM) bulk hetero-junction was directly coupled to 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 MoS3 films 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 a catalyst or without coupling with a solar cell. Gas chromatography analysis confirms the light-induced hydrogen evolution. The addition of titanium dioxide in the MoS3 film enhances electron transport and collection within thick films and therefore the performance of the photocathode.

Graphical abstract: A H2-evolving photocathode based on direct sensitization of MoS3 with an organic photovoltaic cell

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Publication details

The article was received on 18 Apr 2013, accepted on 26 Jun 2013 and first published on 04 Jul 2013


Article type: Paper
DOI: 10.1039/C3EE41321G
Energy Environ. Sci., 2013,6, 2706-2713

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    A H2-evolving photocathode based on direct sensitization of MoS3 with an organic photovoltaic cell

    T. Bourgeteau, D. Tondelier, B. Geffroy, R. Brisse, C. Laberty-Robert, S. Campidelli, R. de Bettignies, V. Artero, S. Palacin and B. Jousselme, Energy Environ. Sci., 2013, 6, 2706
    DOI: 10.1039/C3EE41321G

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