| Ca8Mg(SiO4)4Cl2:Eu2+,Mn2+绿色荧光粉的光谱性质 |
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| 引用本文： | 方英,叶信宇. Ca8Mg(SiO4)4Cl2:Eu2+,Mn2+绿色荧光粉的光谱性质[J]. 江西师范大学学报(自然科学版), 2008, 32(3) |
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| 作者姓名： | 方英 叶信宇 |
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| 作者单位： | 商丘师范学院化学系,河南商丘,476000;北京有色金属研究总院稀土材料国家工程研究中心,北京,100088 |
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| 摘 要： | 在还原气氛下采用高温固相反应法合成了白光LED用绿色荧光粉Ca8Mg(SiO4)4Cl2:Eu2 ,Mn2 .在荧光粉的制备过程中,加入过量的CaCl2有利于提高荧光粉的发射强度.从实验结果可以看出,在Ca8Mg(SiO4)4Cl2基质中Eu2 -Mn2 间存在着能量传递,Mn2 的发射是来源于Eu2 的能量传递,能量传递的方式可能是共振传递.
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| 关 键 词： | 氯硅酸镁钙 荧光粉 发射光谱 能量传递 稀土 |
Luminescence Properties of the Green Phosphor Ca_8Mg(SiO_4)_4Cl_2:Eu~(2+),Mn~(2+) |
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| FANG Ying,YE Xin-yu. Luminescence Properties of the Green Phosphor Ca_8Mg(SiO_4)_4Cl_2:Eu~(2+),Mn~(2+)[J]. Journal of Jiangxi Normal University (Natural Sciences Edition), 2008, 32(3) |
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| Authors: | FANG Ying YE Xin-yu |
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| Affiliation: | 1.Department of Chemistry;Shangqiu Normal University;Shangqiu Henan 476000;China;2.National Engineering Research Center for Rare Earth Materials;General Research Institute for Nonferrous Metals;Beijing 100088;China |
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| Abstract: | The green phosphor for white LED,Ca8Mg(SiO4)4Cl2:Eu2+,Mn2+,was synthesized by high temperature solid state reaction under reducing atmosphere.During the process of the phosphor prepared,the excessive CaCl2 can improve the intensity of emission.The experimental results indicate that there is an effective energy transfer from Eu2+ to Mn2+in Ca8Mg(SiO4)4Cl2 host,and Mn2+ sensitized by Eu2+.This kind of energy transfer may be due to resonance transfer. |
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| Keywords: | calcium magnesium chlorosilicate phosphor emission spectra energy transfer rare earth |
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