Characterization of ZnGa2O4

Mn2+ nanophosphor synthesized by the solvothermal method in 1,4-butanediol-water system

Masahiro Takesada, Morio Osada, Tetsuhiko Isobe

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

We characterized ZnGa2O4:Mn2+ (ZnGa2O4-zinc gallate) nanophosphor synthesized by the solvothermal method in 1,4-butanediol-containing water to increase the amount of Mn2+ ions incorporated in the ZnGa2O4 matrix without post-heat treatment. We investigated the influence of water content in the solvent on the photoluminescence (PL) intensity and the Mn amount, the latter being measured by X-ray fluorescence analysis and electron paramagnetic resonance spectroscopy. The PL intensity per Mn amount reached the maximum at the 50 wt% water content. The addition of water promotes repeated dissolution and precipitation, resulting in homogeneous Mn2+ distribution in the ZnGa2O4 matrix. This suggests that the solvothermal method in the 1,4-butanediol-water system is useful for increasing the amount of Mn2+ ions incorporated in the ZnGa2O4 matrix without post-heat treatment. At the water content >50 wt%, the decrease in PL intensity is attributed to the optical absorption of the by-product, MnOOH.

Original languageEnglish
Pages (from-to)281-285
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume70
Issue number2
DOIs
Publication statusPublished - 2009 Feb

Fingerprint

Water content
moisture content
Photoluminescence
photoluminescence
Water
heat treatment
matrices
Heat treatment
Ions
water
gallates
Light absorption
Paramagnetic resonance
Byproducts
Zinc
electron paramagnetic resonance
dissolving
ions
Dissolution
optical absorption

Keywords

  • A. Nanostructures
  • B. Chemical synthesis
  • D. Electron paramagnetic resonance (EPR)
  • D. Luminescence

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)

Cite this

Characterization of ZnGa2O4 : Mn2+ nanophosphor synthesized by the solvothermal method in 1,4-butanediol-water system. / Takesada, Masahiro; Osada, Morio; Isobe, Tetsuhiko.

In: Journal of Physics and Chemistry of Solids, Vol. 70, No. 2, 02.2009, p. 281-285.

Research output: Contribution to journalArticle

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