Fabrication and photoelectrochemical properties of La5Ti 2MS5O7 (M = Ag, Cu) electrodes

M. Katayama, D. Yokoyama, Y. Maeda, Y. Ozaki, M. Tabata, Y. Matsumoto, A. Ishikawa, J. Kubota, K. Domen

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24 Citations (Scopus)

Abstract

Electrodes of La5Ti2MS5O7 (M = Ag, Cu) were prepared and photoelectrochemical properties of the electrodes were investigated. Two types of electrode preparation methods were carried out: one was spreading a viscous slurry of the bulk powder on a glass plate coated with fluorine-doped tin oxide, and another was thin film growth by vacuum processes followed by annealing treatment. By the use of vacuum processes, clear and higher photocurrent under visible-light irradiation was observed for both La5Ti2CuS5O7 and La 5Ti2AgS5O7. The observed photocurrent was photocathodic, indicating that these materials acted as a p-type semiconductor. La5Ti2MS5O7 are promising materials of a photoelectrode for water splitting under visible-light irradiation.

Original languageEnglish
Pages (from-to)275-278
Number of pages4
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume173
Issue number1-3
DOIs
Publication statusPublished - 2010 Jan 1
Externally publishedYes

Keywords

  • Photocatalyst
  • Photoelectrode
  • Thin film

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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