Enhanced luminescence of gadolinium niobates by Bi3+ doping for field emission displays

被引：64

作者：

Liu, X. M.

Lin, J. ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Rare Earth Chem & Phys, Changchun Inst Appl Chem, Changchun 13002, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2007年 / 122卷

基金：

中国国家自然科学基金;

关键词：

gadolinium niobate; bismuth; photoluminescence; cathodoluminescence; field emission displays;

D O I：

10.1016/j.jlumin.2006.01.264

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Blue emitting GdNbO4: Bi3+ powder phosphors for field emission displays were prepared by a solid state reaction. Both photoluminescence and cathodoluminescence properties of the materials were investigated. GdNbO4 itself shows only a very weak luminescence in the blue spectral region. By doping Bi3+ in GdNbO4, the luminescence intensity was improved greatly. The emission spectrum of the GdNbO4: Bi3+ consists of a broad band with maximum at 445 nm (lifetime = 0.74 mu s; CIE chromaticity coordinates: x = 0.1519 and y = 0. 1196) for both UV and low voltage (1-7 kV) cathode ray excitation. In GdNbO4:Bi3+ phosphors, the energy transfer from NbO43- to activator Bi3+ occurred. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：700 / 703

页数：4

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