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 journalArticle

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

Fingerprint

Polymethyl Methacrylate
Sols
Phosphors
phosphors
Ethanol
ethyl alcohol
Crystallization
Crystal growth
crystal growth
acetates
synthesis
Zinc Acetate
Manganese
Energy transfer
Temperature
manganese
Acetates
Zinc
rods
zinc

Keywords

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

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Low-temperature synthesis of nanosize Zn2SiO4 : Mn 2+ phosphor from the precursor sol in supercritical ethanol and its photoluminescent properties. / Miki, Takuro; Ogawa, Takumi; Isobe, Tetsuhiko; Sfihi, Hocine.

In: Journal of Sol-Gel Science and Technology, Vol. 31, No. 1-3 SPEC.ISS., 08.2004, p. 73-77.

Research output: Contribution to journalArticle

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