Photo-luminescence properties and thermo-luminescence curve analysis of a new white long-lasting phosphor: Ca2MgSi2O7:Dy3+

被引：22

作者：

Lin Lin ^{[1
]}

Zhao Zhonghua ^{[2
,3
]}

Zhang Weiping ^{[2
]}

Zheng Zhiqiang ^{[1
]}

Yin Min ^{[2
]}

机构：

[1] Fujian Normal Univ, Dept Phys, Fuzhou 350007, Peoples R China

[2] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

[3] CUNY City Coll, Dept Phys, New York, NY 10031 USA

来源：

JOURNAL OF RARE EARTHS | 2009年 / 27卷 / 05期

关键词：

white long-lasting phosphor; silicate; dysprosium; thermo-luminescence; rare earths; DY3+;

D O I：

10.1016/S1002-0721(08)60328-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A white long-lasting phosphor Ca2MgSi2O7:Dy3+ was prepared by the solid-state reaction. A strong band peaked at 260 nm was shown in the excitation spectrum of 578 nm emission, which might be attributed to the oxygen deficiency of the host. After irradiated with 254 run for 4 min, the white afterglow of the sample could be seen for 3 h. Moreover, the depths and frequency factors of trap centers were calculated from the thermo-luminescence curve of the sample, which indicated that the trap centers corresponding to the 414 K band were more helpful to the long-lasting phosphorescence.

引用

页码：749 / 752

页数：4

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