| 白光LED用Ca_8Mg(SiO_4)_4Cl_2:Eu~(2+),Dy~(3+)发光粉的发光性能 |
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| 引用本文： | 沈超,邵起越,韩学林,董岩,蒋建清.白光LED用Ca_8Mg(SiO_4)_4Cl_2:Eu~(2+),Dy~(3+)发光粉的发光性能[J].发光学报,2010,31(1):44-48. |
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| 作者姓名： | 沈超 邵起越 韩学林 董岩 蒋建清 |
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| 作者单位： | 东南大学材料科学与工程学院 江苏省先进金属材料高技术重点实验室, 江苏 南京 211189 |
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| 基金项目： | 教育部重大项目培育基金(707029);;江苏省自然科学基金(BK2008317)资助项目 |
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| 摘 要： | 采用高温固相法合成了白光LED用Ca8Mg(SiO4)4Cl2:Eu和Ca8Mg(SiO4)4Cl2:Eu,Dy绿色发光粉。研究发现:共掺Dy可以明显地提高Ca8Mg(SiO4)4Cl2:Eu发光粉的发光性能,表明Dy3+和Eu2+之间存在着能量传递过程。当Dy3+的最佳掺杂摩尔分数为0.02时,发光粉505nm处绿光发射的强度约提高12%。通过对Dy3+和Eu2+光谱特性的分析,Dy3+和Eu2+之间的能量传递机制可归因于无辐射交叉弛豫。
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| 关 键 词： | 白光LED Ca8Mg(SiO4)4Cl2 Eu2+ Dy3+ 发光性能 能量传递 |
| 收稿时间： | 2009-06-08 |
Luminescent Properties of Ca8Mg(SiO4)4Cl2 : Eu2+ ,Dy2+ Phosphor for White LED |
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| SHEN Chao,SHAO Qi-yue,HAN Xue-lin,DONG Yan,JIANG Jian-qing.Luminescent Properties of Ca8Mg(SiO4)4Cl2 : Eu2+ ,Dy2+ Phosphor for White LED[J].Chinese Journal of Luminescence,2010,31(1):44-48. |
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| Authors: | SHEN Chao SHAO Qi-yue HAN Xue-lin DONG Yan JIANG Jian-qing |
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| Institution: | Jiangsu Key Laboratory of Advanced Metallic Materials, Department of Materials Science and Engineering, Southeast University, Nanjing 211189, China |
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| Abstract: | Calcium magnesium chlorosilicate Ca8Mg(SiO4)4Cl2]doped with Eu2+ can be used as a kind of green phosphor for white-light LED because of its effective excitation under NUV light source and bright green emission.However,according to the current research,the relative brightness of this green phosphor had to be improved.In this paper,calcium magnesium chlorosilicate Ca8Mg(SiO4)4Cl2]green phosphors,doped with Eu2 + or co-doped with Eu2 + and Dy3 +,were synthesized by high-temperature solid-state reaction in re... |
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| Keywords: | Ca_8Mg(SiO_4)_4Cl_2:Eu~(2+) Dy~(3+) white-light LED Ca_8Mg(SiO_4)_4Cl_2:Eu~(2+) Dy~(3+) luminescent properties energy transfer |
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