Silicon nanowire photocathodes for photoelectrochemical hydrogen production

Soundarrajan Chandrasekaran, Thomas Nann, Nicolas H. Voelcker

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

The performance of silicon for water oxidation and hydrogen production can be improved by exploiting the antireflective properties of nanostructured silicon substrates. In this work, silicon nanowires were fabricated by metal-assisted electroless etching of silicon. An enhanced photocurrent density of ‒17 mA/cm2 was observed for the silicon nanowires coated with an iron sulphur carbonyl catalyst when compared to bare silicon nanowires (‒5 mA/cm2). A substantial amount of 315 μmol/h hydrogen gas was produced at low bias potentials for the silicon nanowires coated with an iron sulphur carbonyl catalyst.

Original languageEnglish
Article number144
Pages (from-to)1-7
Number of pages7
JournalNanomaterials
Volume6
Issue number8
DOIs
Publication statusPublished - 1 Aug 2016
Externally publishedYes

Keywords

  • Anti-reflective surface
  • Bioinspired catalyst
  • Hydrogen production
  • Nanostructure
  • Silicon nanowire

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