A quantum dot sensitized catalytic porous silicon photocathode

Soundarrajan Chandrasekaran, Thomas J. Macdonald, Yatin J. Mange, Nicolas H. Voelcker, Thomas Nann

Research output: Contribution to journalArticleResearchpeer-review

30 Citations (Scopus)


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. 

Original languageEnglish
Pages (from-to)9478-9481
Number of pages4
JournalJournal of Materials Chemistry A
Issue number25
Publication statusPublished - 7 Jul 2014
Externally publishedYes

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