Photoluminescent properties of LaF3:Eu3+ and GdF3:Eu3+ nanoparticles prepared by co-precipitation method
来源期刊：JOURNAL OF RARE EARTHS2009年第4期
论文作者：S.Lis T.Grzyb
Key words：nanofluofides; phosphors; luminescence; energy transfer; rare earths;
Abstract: LaF3:Eu3+ and GdF3:Eu3+ nanoparticles were prepared by a co-precipitation method in the presence of the chelating agent,citric acid.The structural properties of the products were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM).The average crystallite size was estimated from the full-width at half-maximum (FWHM) of the diffraction peaks by the Scherrer equation.The sizes of the nanoparficles were 12 um for LaF3:Eu3+ and 17 nm for GdF3:Eu3+.The luminescent properties of the nanoparticles were investigated by excitation and emission spectra.Energy transfer from Gd3+ to Eu3+ was observed.
S.Lis1，T.Grzyb1
(1.Department of Rare Earths,Faculty of Chemistry,Adam Mickiewicz University,Grunwaldzka 6,60-780 Poznan,Poland)
Abstract:LaF3:Eu3+ and GdF3:Eu3+ nanoparticles were prepared by a co-precipitation method in the presence of the chelating agent,citric acid.The structural properties of the products were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM).The average crystallite size was estimated from the full-width at half-maximum (FWHM) of the diffraction peaks by the Scherrer equation.The sizes of the nanoparficles were 12 um for LaF3:Eu3+ and 17 nm for GdF3:Eu3+.The luminescent properties of the nanoparticles were investigated by excitation and emission spectra.Energy transfer from Gd3+ to Eu3+ was observed.
Key words:nanofluofides; phosphors; luminescence; energy transfer; rare earths;
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