Luminescence and preparation of LED phosphor Ca8Mg (SiO4)4Cl2 : Eu2+

被引：0
|
作者：
Yang, P [1 ]
Lin, JH [1 ]
Yao, GQ [1 ]
机构：
[1] Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China
来源：
JOURNAL OF RARE EARTHS | 2005年 / 23卷 / 05期
关键词：
europium doped calcium magnesium chlorosilicate; LED green phosphors; wide excitation band; tricolor phosphor; rare earths;
D O I：
暂无
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Calcium magnesium chlorosilicate doped by europium, Ca8Mg (SiO4)(4)Cl-2: Eu2+, was prepared by the solid state reaction at high temperature. The compound obtained is pure Ca8Mg(SiO4)(4)Cl-2 phase with cubic structure. Its average particle size is 5 mu m, and it has good dispersity and morphological form. The excitation spectrum of Ca8Mg(SiO4)(4)Cl-2: Eu2+ is a wide band I which covers from 270 to 480 nm. The emission spectrum is also a wide band peaked at 510 out. The luminescent intensity reaches to the maximum when the concentration of Eu2+ is 2%. The wavelength of emission and excitation of the phosphor with various Eu2+ contents keeps constant. This spectrum range matches violet and blue LED chips very well, and its strong luminescence intensity is suitable for a green phosphor of tricolor phosphor of white light LED.
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页码：633 / 635
页数：3
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