Highly enhanced luminescence of GdTaO4:Eu3+ phosphors by codoping with Zn2+ ions

被引：32

作者：

Gu, Mu ^{[1
]}

Xiao, Lihong ^{[1
]}

Liu, Xiaolin ^{[1
]}

Zhang, Rui ^{[1
]}

Liu, Bingjie ^{[1
]}

Xu, Xin ^{[1
]}

机构：

[1] Tongji Univ, Pohl Inst Solid State Phys, Lab Waves & Microstruct Mat, Shanghai 200092, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2006年 / 426卷 / 1-2期

基金：

上海市自然科学基金;

关键词：

phosphors; solid-state reactions; optical properties; luminescence; CATHODOLUMINESCENCE; NIOBATE; SPECTRA; LI;

D O I：

10.1016/j.jallcom.2006.02.027

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 ; 081704 ;

摘要：

GdTaO4:Eu0.1Znx phosphors were synthesized by the conventional solid-state reaction. The effects of Zn2+ ions on the crystallization behavior, morphology and photoluminescence (PL) properties of GdTaO4:Eu3+ were investigated. The results indicate that the PL intensity of GdTaO4:Eu3+ phosphor was improved remarkably by Zn2+ doping. There were two maxima in PL intensity against Zn2+ dopant concentration, one was improved up to 2.7 times at x = 0.01 and the other was enhanced up to 3.2 times at x = 0.13. The first maximum was regarded as the incorporation of Zn2+ ions altering the local environment of activator Eu3+ ions and the second maximum was due to the flux effect of Zn2+ ions. And the phases of ZnO and GdTa7O19 were observed in excessive Zn2+ doping range (x > 0.13). The considerably enhanced PL brightness and shorten luminescent lifetime of Zn-doped GdTaO4:Eu-3 is very encouraging for the display applications. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：390 / 394

页数：5

共 16 条

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