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Journal Articles Nanotechnology Year : 2016

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.

Dates and versions

cea-01355285 , version 1 (22-08-2016)

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Adina Morozan, Tiphaine Bourgeteau, Denis Tondelier, Bernard Geffroy, Bruno Jousselme, et al.. Noble metal-free hydrogen-evolving photocathodes based on small molecule organic semiconductors. Nanotechnology, 2016, 27 (35), pp.355401. ⟨10.1088/0957-4484/27/35/355401⟩. ⟨cea-01355285⟩
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