LUMINESCENCE STUDIES OF BaGd2O4: Tb+3 PHOSPHOR

被引：3

作者：

Bojja, Appa Rao ^{[1
]}

Mudavat, Srinivas ^{[1
]}

Karnati, Somaiah ^{[1
]}

Muga, Vithal ^{[2
]}

Cheng, Bing Ming ^{[3
]}

机构：

[1] Osmania Univ, Dept Phys, Hyderabad 500007, Andhra Pradesh, India

[2] Osmania Univ, Dept Chem, Hyderabad 500007, Andhra Pradesh, India

[3] Natl Synchrotro Radiat Res Ctr, Hsinchu, Taiwan

来源：

TENTH INTERNATIONAL CONFERENCE ON SOLID STATE LIGHTING | 2010年 / 7784卷

关键词：

Phosphors; photoluminescence; thermoluminescence; gamma radiation; UV excitation; CATHODOLUMINESCENCE;

D O I：

10.1117/12.868349

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The polycrystalline BaGd2-xO4: Tb-x (x = 0.00 - 0.10) phosphors have been prepared by conventional high temperature solid state reaction method. All the prepared samples were characterized by powder XRD and EDS techniques. The photoluminescence (PL) and thermally stimulated luminescence (TSL) studies of these materials were investigated. For PL studies the samples were excited with 263 nm UV light. All the samples showed strong green emission at 543 nm due to D-5(4)-> F-7(5) transition of Tb3+ ions. PL peak intensity was found to increase with increasing dopant concentration. For TSL studies, these samples were gamma-irradiated with different dose rates using Co-60 source. TSL of these phosphors showed a sharp glow peak with peak maxima at 394 K. It is found that the incorporation of terbium activator in BaGd2O4 host lattice resulted in the increase of TSL intensity. The luminescence results of these materials shows that these are promising candidates for new green emission phosphor.

引用

页数：8

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