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A Novel Synthesis of Alkaline Earth Silicate Phosphor Sr3MgSi2O8: Eu^2+, Dy^3+ 被引量:1
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作者 潘文 宁桂玲 +1 位作者 王静慧 林源 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2007年第5期605-608,共4页
A novel method for synthesizing long afterglow silicate phosphor Sr3MgSi2O8:Eu^2+,Dy^3+using TEOS and inorganic powders as reactants was reported. Acetic acid as a catalyzer controlled the hydrolysis of TEOS by adj... A novel method for synthesizing long afterglow silicate phosphor Sr3MgSi2O8:Eu^2+,Dy^3+using TEOS and inorganic powders as reactants was reported. Acetic acid as a catalyzer controlled the hydrolysis of TEOS by adjusting pH value of the system. The morphologies of precursor were characterized by transmission electron microscope (TEM). The structure and optical properties of the phosphor powders were systematically investigated by means of X-ray diffraction and spectrofluorometry. TEM images have reflected the core-shell structure and quasi-spherical morphology of the precursor particles. It was found that the single-phase Sr3MgSi2O8 crystalline structures were obtained at 1050 and 1250 ℃ for the samples prepared with the nano-coating method and the solid state reaction, respectively. The emission intensities of the phosphors prepared by the present method were higher than those by the conventional process. Also, the afterglow characteristic was better than that prepared by solid-state reaction in the comparable condition. 展开更多
关键词 nano-coating precursor phosphor sr3mgsi2o8:Eu^2+ Dy^3+
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Interaction of Rare Earth Ions in Sr2MgSi2O7:Eu^2+,Dy^3+ Material
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作者 海鸥 姜洪义 +3 位作者 xu dong wang yahui zheng wei luo ting 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2016年第2期269-273,共5页
To discuss the function of Eu and Dy and their interaction in Sr2 Mg Si2O7:Eu^2+,Dy^3+ long afterglow material,the Eu and Dy single doped and their co-doped Sr2 Mg Si2O7:Eu^2+,Dy^3+ were prepared.The samples wer... To discuss the function of Eu and Dy and their interaction in Sr2 Mg Si2O7:Eu^2+,Dy^3+ long afterglow material,the Eu and Dy single doped and their co-doped Sr2 Mg Si2O7:Eu^2+,Dy^3+ were prepared.The samples were characterized by X-ray diffraction(XRD),decay curves,photoluminescence(PL),and thermoluminescence(TL).The results indicate that Sr2 Mg Si2O7:Eu has afterglow properties,and the doping of Eu ion in Sr2 Mg Si2O7:Eu^2+,Dy^3+ can lower the depth of traps.Eu ion can not only serve as luminescence center,but also produce traps in the matrix,meanwhile,it also exerts certain influences on the traps produced by Dy in Sr2 Mg Si2O7:Eu^2+,Dy^3+.The Dy ion can not act as luminescence center but relates to the change of the traps in the Sr2 Mg Si2O7 matrix. 展开更多
关键词 phosphors afterglow properties luminescence traps sr2mgsi2o7:Eu^2+ Dy^3+
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