FluorescenceandpreparationofSr2（P2O7）:Ce,Tbphosphatebyco-precipitationmethod

被引：8

作者：

Cheng-Guo Ma

Wei Zheng

Li-Guo Jin

Li-Min Dong

机构：

[1] SchoolofMaterialScience&Engineering,HarbinUniversityofScienceandTechnology

来源：

RareMetals | 2013年 / 32卷 / 04期

关键词：

Phosphors; Co-precipitation method; Rare earth phosphate; Phosphorescence;

D O I：

暂无

中图分类号：

TN104.3 [显示材料];

学科分类号：

0805 ; 080502 ;

摘要：

The micron-sized Sr 2(P2O7):Ce,Tb green phosphors were prepared by being annealed at different temperatures with its precursors synthesized by co-precipitates of(NH4) 2HPO4 at ambient temperature. The phase structure, grain size, surface morphology, and luminescent properties of phosphors were investigated by X-ray diffraction, scanning electron microscope, transmission electron microscope, and fluorescence spectrum. The results show that the product of precursor annealed at 1,100 °C is Sr 2(P 2O7):Ce,Tb, which belongs to orthorhombic phase. The powder is spherical and the size distribution is in micron grade. The sample with the molar ratio of Sr/Tb/Ce of 100.0:0.4:0.6 shows the best fluorescence effect annealed at 1,100 °C for 3 h. The phosphors produce green fluorescence by being excitated with ultraviolet radiation of 254 nm wavelength, and the main emission peak is at 547 nm. The Sr 2(P2O7):Ce,Tb phosphors synthesized by co-precipitation method of precursors at ambient temperature is a kind of efficient green-emitting phosphors.

引用

页码：420 / 424

页数：5

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