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Issue 25, 2014
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A quantum dot sensitized catalytic porous silicon photocathode

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Abstract

Solar fuels have attracted considerable attention as an alternative energy vector in the context of the dwindling supplies of the planet's non-renewable resources. The first step in solar fuel generation is often a photo-catalytic water splitting. Although a very large amount of work has been dedicated to optimise the photo-oxidation process (mostly based on titania), the development of highly efficient photocathodes is limited. In this paper, we report the fabrication and characterisation of a nano-structured photocathode using indium phosphide QDs and a bio-inspired Fe2S2(CO)6 catalyst, p-type porous silicon photocathode. Our hybrid electrode system produced a photocurrent density of −1.2 mA cm−2 with hydrogen evolution at low bias potentials.

Graphical abstract: A quantum dot sensitized catalytic porous silicon photocathode

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Publication details

The article was received on 07 Apr 2014, accepted on 07 May 2014 and first published on 07 May 2014


Article type: Communication
DOI: 10.1039/C4TA01677G
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J. Mater. Chem. A, 2014,2, 9478-9481

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    A quantum dot sensitized catalytic porous silicon photocathode

    S. Chandrasekaran, T. J. Macdonald, Y. J. Mange, N. H. Voelcker and T. Nann, J. Mater. Chem. A, 2014, 2, 9478
    DOI: 10.1039/C4TA01677G

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