| Synthesis and luminescence characteristics of Li2Y4-xEux（WO4）7-y（MoO4）y red-emitting phosphor for white LED |
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| 引用本文： | 茹晶晶,郭飞云,陈建中.Synthesis and luminescence characteristics of Li2Y4-xEux（WO4）7-y（MoO4）y red-emitting phosphor for white LED[J].中国稀土学报(英文版),2013,31(11):1059-1062. |
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| 作者姓名： | 茹晶晶 郭飞云 陈建中 |
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| 作者单位： | [1]Department of Chemistry, Ningde Normal University, Ningde 352100, China [2]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou350108, China |
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| 基金项目： | Project supported by Fujian Provincial Department of Education Project （JA13331）Acknowledgement： Authors would like to thank the financial support from Ningde Science and Technology Project （20110115） and Service Haixi Construction Project of Ningde Normal University （2011 H206）. |
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| 摘 要： | Li2Y4-xEux（WO4）7-y（MoO4）y red-emitting phosphors were synthesized by solid state reaction and characterized by powder X-ray diffraction （XRD） and photoluminescence （PL） spectrum. The excitation spectra showed that the phosphors could be efficiently excited by near-UV light of 395 nm. When the relative molar ratio of Mo/W was 7：0, and the optimum doped concentration of Eu3＋was 2.8 mol, the phosphor showed strong red emission lines at 615 nm corresponding to the forced electric dipole 5D0→7F2 transition of Eu3＋. Compared with Na2Y2Eu2（MoO4）7 and K2Y2Eu2（MoO4）7, the fluorescence intensity of Li2Y1.2Eu2.8（MoO4）7 phosphor was the strongest. The CIE chromaticity coordinates of Li2Y1.2Eu2.8（MoO4）7 phosphor was calculated to be （0.66, 0.34）.
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| 关 键 词： | 红色荧光体 白色LED 发光特性 合成 X射线粉末衍射 盐 最佳掺杂浓度 激发光谱 |
| 收稿时间： | 7 June 2013 |
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