Preparation of Y2O3:Eu3+ phosphor by molten salt assisted method

被引：7
|
作者：
黄燕 [1 ]
叶红齐 [1 ]
庄卫东 [2 ]
胡运生 [2 ]
赵春雷 [2 ]
李萃 [2 ]
郭松霞 [2 ]
机构：
[1] School of Chemistry and Chemical Engineering, Central South University  2. National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals
来源：
TransactionsofNonferrousMetalsSocietyofChina | 2007年 / 03期
基金：
中国国家自然科学基金;
关键词：
Y2O3:Eu3+; molten salt; homogeneous precipitation; morphology; luminescent property;
D O I：
暂无
中图分类号：
O614.33 [镧系元素（稀土元素）];
学科分类号：
070301 ; 081704 ;
摘要：
A kind of fine and quasi-spherical Y2O3:Eu3+ phosphor was prepared by firing a preparative precursor at 1 200 ℃ for 2 h with the molten salts of Na2CO3, S and NaCl. The precursor was obtained by homogeneous precipitation of yttrium and europium with oxalic acid when using EDTA, citric acid or starch as complexant. The structure and morphology of the phosphors were characterized by XRD and SEM, respectively. The influence of complexing environment, firing temperature and molten salts on formation of the phosphor Y2O3:Eu3+ was discussed. The result show that the prepared Y2O3:Eu3+ phosphor is of quasi-spherical structure with size of 2-3 μm. Its luminescent intensity is 30% higher than that of the same phosphor prepared by the same procedure but without molten salts, and is 5% higher than that of commercial Y2O3:Eu3+ red phosphor.
引用
收藏
页码：644 / 648
页数：5
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