Luminescent properties of Sr2MgSi2O7 and Ca2MgSi2O7 long lasting phosphors activated by Eu2+, Dy3+

被引：151

作者：

Fei, Q ^{[1
]}

Chang, CK ^{[1
]}

Mao, DL ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200030, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 390卷 / 1-2期

基金：

上海市自然科学基金;

关键词：

luminescence; phosphor; alkaline earth silicates; long afterglow;

D O I：

10.1016/j.jallcom.2004.06.096

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

Long lasting afterglow phosphors Sr2MgSi2O7:Eu,Dy and Ca2MgSi2O7:Eu,Dy were prepared by solid-state reaction method. It is revealed by the results that both phosphors show two emission peaks that are caused by the different emitting centers EU2+ held in the host lattice. Wavelength shift was observed due to the slight differences in the structure parameters of the two hosts. Investigation on afterglow property shows that Sr2MgSi2O7:Eu,Dy phosphor held a better afterglow property than Ca2MgSi2O7:Eu,Dy phosphor. Thermal simulated luminescence study indicates that the long afterglow is generated by a higher trap concentration formed by the co-doped rare earth ions within the host. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：133 / 137

页数：5

共 11 条

[1]

FLUORESCENCE OF EU2+-ACTIVATED PHASES IN BINARY ALKALINE EARTH ORTHOSILICATE SYSTEMS [J].