Comparative investigation of photoluminescence and long-lasting phosphorescence properties in the (CaO-CaBr2-SiO2):: Eu2+ phosphor system

被引：21

作者：

Xia, Zhiguo ^{[1
]}

Liu, Jie

Li, Qiang

Sun, Jiayue

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[2] Shanghai Normal Univ, Dept Chem, Shanghai 200234, Peoples R China

[3] Beijing Technol & Business Univ, Coll Chem & Environm Engn, Beijing 100037, Peoples R China

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2007年 / 10卷 / 01期

关键词：

D O I：

10.1149/1.2364307

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We developed a (CaO - CaBr2 - SiO2) : Eu2+ long-lasting phosphor system. The photoluminescence (PL) spectrum reveals that two quite different emission bands can be observed, in which is presumed that Eu2+ ions occupy two types of sites, Eu(1) and Eu(2). The phosphor shows strong blue and weak greenish yellow emission under 365 nm UV light. The long-lasting phosphorescence (LLP) spectrum testifies to the existence of two types of emission centers, but the corresponding emission intensity is reversed. It emits obvious greenish yellow light and shows strong long-lasting phosphorescence in the dark. The possible mechanism of the unusual PL and LLP emission is also discussed. (c) 2006 The Electrochemical Society.

引用

页码：J4 / J8

页数：5

共 19 条

[1]

AHSAN MR, 2002, J NONCRYST SOLIDS, V351, P2333

[2] Effects of dopant concentrations on phosphorescence properties of Eu/Dy-doped Sr3MgSi2O8 [J].

Alvani, AAS ;

Moztarzadeh, F ;

Sarabi, AA .

JOURNAL OF LUMINESCENCE, 2005, 114 (02) :131-136

[3]

Blasse G., 1994, LUMINESCENT MAT, DOI [10.1007/978-3-642-79017-1_1, DOI 10.1007/978-3-642-79017-1_1]

[4]

Burrus H. L., 1971, Journal of Luminescence, V3, P467, DOI 10.1016/0022-2313(71)90027-5

[5] Mechanism of phosphorescence appropriate for the long-lasting phosphors Eu2+-doped SrAl2O4 with codopants Dy3+ and B3+ [J].

Clabau, F ;

Rocquefelte, X ;

Jobic, S ;

Deniard, P ;

Whangbo, MH ;

Garcia, A ;

Le Mercier, T .

CHEMISTRY OF MATERIALS, 2005, 17 (15) :3904-3912

[6] Low-temperature synthesis of SrA12O4 by a modified sol-gel route:: XRD and Raman characterization [J].

Escribano, P ;

Marchal, M ;

Sanjuán, ML ;

Alonso-Gutiérrez, P ;

Julián, B ;

Cordoncillo, E .

JOURNAL OF SOLID STATE CHEMISTRY, 2005, 178 (06) :1978-1987

[7] Structural, optical and non-linear investigation of Eu3+ ions in sol-gel silicate glass [J].

Hazarika, S ;

Rai, S .

OPTICAL MATERIALS, 2004, 27 (02) :173-179

[8] The trap states in the Sr2MgSi2O7 and (Sr,Ca)MgSi2O7 long afterglow phosphor activated by Eu2+ and Dy3+ [J].

Liu, B ;

Shi, CS ;

Yin, M ;

Dong, L ;

Xiao, ZG .

JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 387 (1-2) :65-69

[9] Characterization and properties of green emitting Ca3SiO4Cl2:Eu2+ powder phosphor for white light-emitting diodes [J].

Liu, J ;

Lian, HZ ;

Sun, JY ;

Shi, CS .

CHEMISTRY LETTERS, 2005, 34 (10) :1340-1341

[10] Luminescent properties of a white afterglow phosphor CdSiO3:Dy3+ [J].

Liu, YL ;

Lei, BF ;

Shi, CS .

CHEMISTRY OF MATERIALS, 2005, 17 (08) :2108-2113

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