Combinatorial discovery of anomalous substrate effect on the photochemical properties of transition metal-doped epitaxial SrTiO 3 heterostructures

T. Ohsawa, K. Nakajima, Y. Matsumoto, H. Koinuma

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)

Abstract

Epitaxial Sr(V x Cr y Ti 1-x-y )O 3 (0≤x+y≤0.05) ternary composition spreads were grown on two different single crystal substrates, LaAlO 3 and Nb-doped SrTiO 3 , by use of combinatorial laser molecular beam epitaxy with a specially patterned slide masking plate. The photocatalytic activity on the composition spreads was evaluated by the photo-reduction of Ag + in an AgNO 3 aqueous solution to deposit Ag metal on the spreads. The V-doping effect was found to depend greatly on the substrate: the photodeposition of Ag was much enhanced in the composition region of SrV 0.05 Ti 0.95 O 3 only on the Nb-doped SrTiO 3 , but not on the LaAlO 3 and non-doped SrTiO 3 .

Original languageEnglish
Pages (from-to)2603-2607
Number of pages5
JournalApplied Surface Science
Volume252
Issue number7
DOIs
Publication statusPublished - 2006 Jan 21
Externally publishedYes
EventProceedings of the Third Japan-US Workshop on Combinatorial Material Science and Technology CMST-e SI -
Duration: 2004 Dec 72004 Dec 10

Keywords

  • Combinatorial
  • Laser MBF
  • Photocatalysis
  • SrTiO

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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