Intense violet-blue emitting (CaCl2/SiO2) :: Eu2+ phosphor powders for applications in UV-LED based phototherapy illuminators

被引：21

作者：

Hao, Zhendong ^{[1
,2
]}

Zhang, Jiahua ^{[1
]}

Zhang, Xia ^{[1
]}

Ren, Xinguang ^{[1
]}

Luo, Yongshi ^{[1
]}

Lu, Shaozhe ^{[1
]}

Wang, Xiaojun ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys CIOMP, Key Lab Excited State Proc, Changchun 130033, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] Georgia So Univ, Dept Phys, Statesboro, GA 30460 USA

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2008年 / 41卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Chlorine compounds - Silica - Light emission - Solid state reactions - Light emitting diodes;

D O I：

10.1088/0022-3727/41/18/182001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An intense violet-blue emitting (CaCl2/SiO2) : Eu2+ phosphor with a composition of 25% CaCl2 and 75% SiO2 is prepared by a solid state reaction. The phosphor emits at 427 nm with a narrow bandwidth of 21 nm. The photoluminescence (PL) intensities and fluorescence lifetimes are studied as a function of Eu2+ concentrations. It is observed that the PL intensity of (CaCl2/SiO2) : Eu2+ can be 30% higher than that of commercial Sr2P2O7 : Eu2+ phosphor under 395 nm excitation. (CaCl2/SiO2) : Eu2+ would be a promising new phosphor for converting near-ultraviolet radiation to violet-blue emission for a novel phototherapy illuminator using a near-ultraviolet (similar to 395 nm) light emitting diode as the excitation source.

引用

页数：4

共 16 条

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