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Investigation on the amounts of Na_2CO_3 and sulphur to obtain pure Y_2O_2S and up-conversion luminescence of Y_2O_2S:Er 被引量：3

Investigation on the amounts of Na_2CO_3 and sulphur to obtain pure Y_2O_2S and up-conversion luminescence of Y_2O_2S:Er
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摘要 The process to prepare pure phase of hexagonal Y2O2S was investigated. Effect of mixed flux of Na2CO3 and S amounts was studied. The phase composition and morphology were characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）. The results showed that the single phase of Y2O2S with smooth morphology could not be obtained as the molar ratio of Y2O3, Na2CO3 and S was in the range of 1：（0.5-1）：（2-3） until the molar ratio was increased to 1：1.5：4. Different Er3＋ concentration doped Y2O2S：Er powders were prepared with molar ratio of the raw materials 1：1.5：4. The quenching concentration of Er3＋ in Y2O2S was more than 2 mol.%, which was due to the interaction of electric quadrupoles between Er3＋ ions. The process to prepare pure phase of hexagonal Y2O2S was investigated. Effect of mixed flux of Na2CO3 and S amounts was studied. The phase composition and morphology were characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）. The results showed that the single phase of Y2O2S with smooth morphology could not be obtained as the molar ratio of Y2O3, Na2CO3 and S was in the range of 1：（0.5-1）：（2-3） until the molar ratio was increased to 1：1.5：4. Different Er3＋ concentration doped Y2O2S：Er powders were prepared with molar ratio of the raw materials 1：1.5：4. The quenching concentration of Er3＋ in Y2O2S was more than 2 mol.%, which was due to the interaction of electric quadrupoles between Er3＋ ions.
作者 韩朋德 张乐 王丽熙 张其土
机构地区 College of Materials Science and Engineering
出处 《Journal of Rare Earths》 SCIE EI CAS CSCD 2011年第9期849-854,共6页 稀土学报（英文版）
基金 Project supported by Military Coordination Scientific Research Projects (JPPT-1486) the Priority Academic Program Development of Jiangsu Higher Education Institutions (CXZZ11_0333)
关键词 Y2O2S flux method phase composition morphology concentration quenching rare earths Y2O2S flux method phase composition morphology concentration quenching rare earths
分类号 O614.322 [理学—无机化学]
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参考文献28

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二级参考文献11

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Journal of Rare Earths
2011年 第9期

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