Europium-doped yttrium silicate nanophosphors prepared by flame synthesis

Xiao Qin, Yiguang Ju, Stefan Bernhard, Nan Yao

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Europium-doped yttrium silicate (Y2SiO5:Eu3+) nanophosphors were successfully synthesized by flame spray pyrolysis method. The effect of silicon concentration on the crystal structure and morphology of the Y2SiO5:Eu3+ phosphors were investigated. As-prepared phosphor consists of spherical nanoparticles with filled morphology, high crystallinity, narrow size distribution, and intense photoluminescence. The crystal structure and photoluminescence intensity of Y2SiO5:Eu3+ nanophosphors are strongly affected by the ratio of silicon to yttrium in the precursor solution, and the maximum photoluminescence intensity is obtained from particles prepared from the silicon to yttrium ratio of 1.25. A concentration quenching limit is observed at 30 mol% Eu of yttrium. The photoluminescence intensity also increases with the increase of the concentration of precursor solution. This work demonstrates the advantages of flame spray pyrolysis method for the preparation of multi-component nanophosphor, which can be found potential application in lamp and display industries.

Original languageEnglish (US)
Pages (from-to)1440-1449
Number of pages10
JournalMaterials Research Bulletin
Volume42
Issue number8
DOIs
StatePublished - Aug 7 2007

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • A. Inorganic compounds
  • C. X-ray diffraction
  • D. Crystal structure
  • D. Optical properties

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