Hydrogen gas generation by splitting aqueous water using n-type GaN photoelectrode with anodic oxidation

Katsushi Fujii*, Takeshi Karasawa, Kazuhiro Ohkawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

136 Scopus citations

Abstract

Hydrogen gas generation from a counterelectrode was clearly observed for the first time using light-illuminated n-type GaN as a working photoelectrode in an electrolyte. The application of extra bias to a working electrode was required to obtain a sufficient volume of generated gas. The reactions at the GaN photoelectrode were both GaN decomposition and water oxidization, simultaneously.

Original languageEnglish (US)
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume44
Issue number16-19
DOIs
StatePublished - Dec 1 2005

Keywords

  • Gallium nitride
  • Photoelectrochemical cells
  • Photoelectrolysis
  • Semiconductor-electrolyte contacts
  • Water splitting

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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