| Fluorescence and preparation of Sr2（P2O7）：Ce,Tb phosphate by co-precipitation method |
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| 作者姓名： | Cheng-Guo Ma Wei Zheng Li-Guo Jin Li-Min Dong |
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| 作者单位： | School of Material Sc-ience ＆ Engineering, Harbin University ofScience and Technology, Harbin 150040, China |
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| 基金项目： | This project was financially supported by the National Natural Science Foundation of China （No. 21273060） and the Program for New Century Excellent Talents in Heilongjiang Provincial University （No.1251-NCET-014）. |
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| 摘 要： | The micron-sized Sr2（P2OT）：Ce,Tb green phosphors were prepared by being annealed at different temperatures with its precursors synthesized by co-pre-cipitates 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, trans-mission electron microscope, and fluorescence spectrum. The results show that the product of precursor annealed at 1,100 ℃ is Sr2（P2O7）：Ce,Tb, which belongs to ortho-rhombic phase. The powder is spherical and the size dis-tribution is in micron grade. The sample with the molar ratio of Sr/Tb/Ce of 100.0：0.4：0.6 shows the best fluores-cence effect annealed at 1,100 ℃ for 3 h. The phosphors produce green fluorescence by being excitated with ultra-violet radiation of 254 nm wavelength, and the main emission peak is at 547 nm. The Sr2（P2O7）：Ce,Tb phos-phors synthesized by co-precipitation method of precursors at ambient temperature is a kind of efficient green-emitting phosphors.
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| 关 键 词： | 绿色荧光体 共沉淀法 磷酸 扫描电子显微镜 透射电子显微镜 铈 铽 环境温度 |
Fluorescence and preparation of Sr2(P2O7):Ce,Tb phosphate by co-precipitation method |
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| Cheng-Guo Ma,Wei Zheng,Li-Guo Jin,Li-Min Dong.Fluorescence and preparation of Sr2(P2O7):Ce,Tb phosphate by co-precipitation method[J].Rare Metals,2013,32(4):420-424. |
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| Authors: | Cheng-Guo Ma Wei Zheng Li-Guo Jin Li-Min Dong |
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| Affiliation: | School of Material Science & Engineering, Harbin University of Science and Technology, Harbin 150040, China |
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| Abstract: | The micron-sized Sr2(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 Sr2(P2O7):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 Sr2(P2O7):Ce,Tb phosphors synthesized by co-precipitation method of precursors at ambient temperature is a kind of efficient green-emitting phosphors. |
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| Keywords: | Phosphors Co-precipitation method Rareearth phosphate Phosphorescence |
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