Low-temperature synthesis of nanosize Zn2SiO4:Mn 2+ phosphor from the precursor sol in supercritical ethanol and its photoluminescent properties

Takuro Miki, Takumi Ogawa, Tetsuhiko Isobe, Hocine Sfihi

Research output: Contribution to journalReview article

18 Citations (Scopus)

Abstract

The solvothermal reaction in supercritical ethanol produces nanosize Zn2SiO4:Mn2+ from the precursor sol derived from the mixture of zinc acetate, manganese acetate and TEOS. Spherical primary particles of 10-20 nm were grown to the rod-like particles of 10-30 nm diameter and 200-350 nm length by increasing the aging temperature from 200 to 265°C and by optimizing the water/ethanol ratio of sol. This crystal growth improved the intensity of green emission due to the d-d transition of Mn2+ through energy transfer from Zn2SiO4, We discuss the process of Zn2SiO4:Mn2+ crystal growth during the solvothermal reaction in supercritical ethanol.

Original languageEnglish
Pages (from-to)73-77
Number of pages5
JournalJournal of Sol-Gel Science and Technology
Volume31
Issue number1-3 SPEC.ISS.
DOIs
Publication statusPublished - 2004 Aug 1

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Keywords

  • Nanosize phosphor
  • Photoluminescence
  • Solvothermal reaction
  • Supercritical ethanol
  • ZnSiO:Mn

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Biomaterials
  • Condensed Matter Physics
  • Materials Chemistry

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