Emission color variation of M2SiO4:Eu2+ (M=Ba, Sr, Ca) phosphors for light-emitting diode

被引：227

作者：

Kim, JS ^{[1
]}

Jeon, PE ^{[1
]}

Choi, JC ^{[1
]}

Park, HL ^{[1
]}

机构：

[1] Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea

来源：

SOLID STATE COMMUNICATIONS | 2005年 / 133卷 / 03期

关键词：

silicate phosphor; white-light-emitting diode; photoluminescence;

D O I：

10.1016/j.ssc.2004.10.017

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The luminescent properties of alkaline earth orthosilicates M2SiO4 (M = Ba, Sr, Ca) doped with Eu2+ ions are investigated. Two emission bands are assigned to the f-d transitions of Eu-2+ ions doped into two different cation sites in host lattices confirmed by electron paramagnetic resonance signal. Two emission bands show the different emission color variation with substituting M2+ cations with smaller cations. This behavior is discussed in tennis of two competing factors of the crystal field strength and covalence. Also the decay times are in order of 600-1000 ns. These phosphors with maximum excitation of around 370 urn can be applied as a color-tunable phosphor for light-emitting diode based on ultraviolet chip/phosphor technology. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：187 / 190

页数：4

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