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Preparation and Characterization of Sol-Gel Derived Au Nanoparticle Dispersed Y2O3∶Eu Films

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【作者】 郭海； 张慰萍； 董宁； 楼立人； 尹民； Tillement O； Mugnier J； Bernstein E； Brevet P F；

【Author】 Guo Hai~ 1,2, Zhang Weiping ~ 2*, Dong Ning ~2, Lou Liren ~2, Yin Min ~ 1,2, Tillement O~3, Mugnier J~3, Bernstein E~4, Brevet P F~5 (1. Structure Research Laboratory, University of Science and Technology of China, Academia Sinica, Hefei 230026, China; 2. Department of Physics, University of Science and Technology of China, Hefei 230026, China; 3. Laboratoire de Physico-Chimie des Materiaux Luminescents, CNRS-UMR 5620, Universite Claude Bernard Lyon I, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France; 4. Department de Physique des Materiaux, CNRS-UMR 5586, Universite Claude Bernard Lyon I, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France; 5. Laboratoire de Spectrometrie Ionieque et Moleculaire, CNRS-UMR 5579, Universite Claude Bernard Lyon I, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France)

【机构】 Structure Research Laboratory； University of Science and Technology of China； Academia Sinica； Hefei 230026； China； Department of Physics； China； Department of Physics； Laboratoire de Physico-Chimie des Materiaux Luminescents； CNRS-UMR 5620； Universite Claude Bernard Lyon I； 43 Boulevard du 11 Novembre 1918； 69622 Villeurbanne Cedex； France； Laboratoire de Spectrometrie Ionieque et Moleculaire； CNRS-UMR 5579； France； Department de Physique des Materiaux； CNRS-UMR 5586； France)；

【Abstract】 Gold nanoparticles dispersed Y2O3 films were prepared through a sol-gel method by using yttrium acetate and Au nanoparticles colloid as precursors. The films were characterized by X-ray diffraction （XRD）, transmission electron microscopy （TEM） and UV-VIS absorption spectra. XRD patterns and TEM images of Y2O3+Au films give the same results on structure and particle size as that of pure Y2O3 films. The surface plasma resonance （SPR） of Au nanoparticles in Y2O3+Au film was observed around 550 nm in the absorption spectrum and its position shifts to red with increasing annealing temperature is caused by the increase of dielectric constant of Y2O3 matrix and the size of Au nanoparticles. The second and third order nonlinear optical effects of Y2O3+Au films were also observed. The photoluminescent properties of Y2O3∶Eu+Au films were investigated and results indicate that there exist an energy transfer from Eu 3+ to Au nanoparticles and this energy transfer decreases the emission of Eu 3+ in Y2O3∶Eu+Au film.

【关键词】 sol-gel； Y2O3+Au films； nanocomposite； photoluminescence； rare earths；
【Key words】 sol-gel； Y2O3+Au films； nanocomposite； photoluminescence； rare earths；
【基金】 Projectsupportedby“ProgrammedeRecherchesAvancsMX9905”betweenFranceandChina
  • 【文献出处】 Journal of Rare Earths ,稀土学报(英文版) , 编辑部邮箱 ,2005年05期
  • 【分类号】TN304.055;
  • 【被引频次】9
  • 【下载频次】50
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