"Doughnut-shaped" coloration of V2O5 upon laser irradiation: Another evidence of visible light photocromism of V2O5

Shigeru Nishio, Masato Kakihana, Hiromi Eba, Kenji Sakurai

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This short note provides proof of the visible light photochromism of polycrystalline V2O5 using much simpler method than that in previous report [S. Nishio and M. Kakihana: Chem. Mater. 14 (2002) 3730]. It was found that the "doughnut-shape" coloration in polycrystalline V2O5 samples is formed around a direct laser spot visible laser irradiation; that is, the depth of coloration attains its maximum with increasing laser power. This effect can be a consequence of light and heat having opposite actions (coloration and bleaching, respectively) on polycrystalline V2O5. The result is clear evidence of photochromism based on the definition of the term.

Original languageEnglish
Pages (from-to)5670-5671
Number of pages2
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume42
Issue number9 A
Publication statusPublished - 2003 Sep 1
Externally publishedYes

Keywords

  • Laser
  • Photochromism
  • Polycrystalline
  • VO
  • Visible light

ASJC Scopus subject areas

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

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