Color tunability of nanophosphors by changing cations for solid-state lighting

被引：16
|
作者：
Kim, JS [1 ]
Park, YH
Choi, JC
Park, HL
Kim, GC
Yoo, JH
机构：
[1] Pukyong Natl Univ, Div Image Informat Sci & Engn, Pusan 608739, South Korea
[2] Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea
[3] Korea Univ Technol & Educ, Cheonan 330708, South Korea
来源：
SOLID STATE COMMUNICATIONS | 2006年 / 137卷 / 04期
关键词：
nanophosphor; white-light-emitting diode; covalency; crystal field strength; photoluminescence;
D O I：
10.1016/j.ssc.2005.11.021
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
X3MgSiO8: Eu2+, Mn2+ (X = Ba, Sr, Ca) phosphors with the mean particle size of 200 nm and the spherical shape are synthesized through combustion method. They show three emission colors under near-ultraviolet light: the blue and green colors from Eu2+ ions and the red color from Mn2+ ions. Three emission bands show the different emission colors with changing X2+ cations. These color shifts are discussed in terms of two competing factors of the crystal field strength and the covalency. These phosphors with maximum excitation of around 375 nm can be applied as color-tunable phosphors for white-light-emitting diode based on ultraviolet/phosphor technology. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：187 / 190
页数：4
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