Atomic force microscope analysis of photodecomposition of pentacene film on the epitaxial thin film photocatalyst library

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

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

We have demonstrated high-throughput synthesis and screening of a thin film photocatalyst library. Pulsed laser deposition enables us to grow the thin film photocatalyst epitaxially with atomically flat terraces and steps. A binary composition spread of [(SrTiO3) 1-x(LaAlO3)x] (0 < x < 1) was fabricated by a combinatorial composition gradient technique. To evaluate the photocatalytic activity for the composition spread, the photodecomposition of pentacene film on the spread was employed and was analysed quantitatively after UV illumination by using an atomic force microscope. For comparison, the photodeposition of Ag from aqueous silver nitrate solution (0.01 M) was also tested. The results obtained from the two methods were basically the same: the SrTiO3-rich region in the film showed greater photocatalytic activity.

Original languageEnglish
Pages (from-to)199-202
Number of pages4
JournalMeasurement Science and Technology
Volume16
Issue number1
DOIs
Publication statusPublished - 2005 Jan
Externally publishedYes

Keywords

  • Combinatorial
  • Epitaxy
  • Organic thin film
  • Oxide film
  • Photocatalysis

ASJC Scopus subject areas

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics

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