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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
收稿:2009-06-08,
修回:1900-1-2,
网络首发:2010-02-20,
纸质出版:2010-02-20
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沈 超, 邵起越, 韩学林, 等. 白光LED用Ca8Mg(SiO4)4Cl2 : Eu2+ , Dy3+ 发光粉的发光性能[J]. 发光学报, 2010,31(1):44-48.
SHEN Chao, SHAO Qi-yue, HAN Xue-lin, et al. Luminescent Properties of Ca8Mg(SiO4)4Cl2 : Eu2+ ,Dy2+ Phosphor for White LED[J]. Chinese Journal of Luminescence, 2010, 31(1): 44-48.
采用高温固相法合成了白光LED用Ca
8
Mg(SiO
4
)
4
Cl
2
: Eu和Ca
8
Mg(SiO
4
)
4
Cl
2
: Eu
Dy绿色发光粉。研究发现:共掺Dy可以明显地提高Ca
8
Mg(SiO
4
)
4
Cl
2
: Eu发光粉的发光性能
表明Dy
3+
和Eu
2+
之间存在着能量传递过程。当Dy
3+
的最佳掺杂摩尔分数为0.02时
发光粉505 nm处绿光发射的强度约提高12%。通过对Dy
3+
和Eu
2+
光谱特性的分析
Dy
3+
和Eu
2+
之间的能量传递机制可归因于无辐射交叉弛豫。
paper
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