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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 ?-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.

SUBMITTER: Morozan A

PROVIDER: S-EPMC5490788 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature

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Noble metal-free hydrogen-evolving photocathodes based on small molecule organic semiconductors.

Morozan A A Bourgeteau T T Tondelier D D Geffroy B B Jousselme B B Artero V V

Nanotechnology 20160725 35

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-sexithi ...[more]

PMID: 27455142

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