title: Noble metal-free hydrogen-evolving photocathodes based on small molecule organic semiconductors.
abstract: Organic semiconductors have great potential for producing hydrogen in a sustainable and economically-viable manner because they rely on readily available materials with highly tunable properties. We demonstrate here the relevance of heterojunctions to the construction of H2-evolving photocathodes, exclusively based on earth-abundant elements. Boron subnaphthalocyanine chloride proved a very promising acceptor in that perspective. It absorbs a part of the solar spectrum complementary to α-sexithiophene as a donor, thus generating large photocurrents and providing a record onset potential for light-driven H2 evolution under acidic aqueous conditions using a nanoparticulate amorphous molybdenum sulfide catalyst.
authors.affiliation: Laboratoire de Chimie et Biologie de Métaux, Université Grenoble Alpes, CNRS UMR 5249, CEA, 38054 Grenoble Cedex 09, France.
authors.forename: A
authors.initials: A
authors.lastname: Morozan
authors.forename: T
authors.initials: T
authors.lastname: Bourgeteau
authors.forename: D
authors.initials: D
authors.lastname: Tondelier
authors.forename: B
authors.initials: B
authors.lastname: Geffroy
authors.forename: B
authors.initials: B
authors.lastname: Jousselme
authors.forename: V
authors.initials: V
authors.lastname: Artero