Europium-doped yttrium silicate nanophosphors prepared by flame synthesis

Journal Article · Tue Aug 07 04:00:00 EDT 2007 · Materials Research Bulletin

OSTI ID:21000682

Xiao, Qin ^[1]; Yiguang, Ju ^[1]; Bernhard, Stefan ^[2]; Nan, Yao ^[3]

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1. Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544 (United States)
2. Department of Chemistry, Princeton University, Princeton, NJ 08544 (United States)
3. Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, NJ 08544 (United States)

Europium-doped yttrium silicate (Y{sub 2}SiO{sub 5}:Eu{sup 3+}) nanophosphors were successfully synthesized by flame spray pyrolysis method. The effect of silicon concentration on the crystal structure and morphology of the Y{sub 2}SiO{sub 5}:Eu{sup 3+} 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 Y{sub 2}SiO{sub 5}:Eu{sup 3+} 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.

• OSTI ID: 21000682
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 8 Vol. 42; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
DOPED MATERIALS
EUROPIUM
EUROPIUM IONS
MORPHOLOGY
NANOSTRUCTURES
OPTICAL PROPERTIES
PHOTOLUMINESCENCE
PYROLYSIS
QUENCHING
SILICON
X-RAY DIFFRACTION
YTTRIUM
YTTRIUM SILICATES