Luminescence enhancement of CaZnGe2O6:Tb3+ afterglow phosphors synthesized using ZnO nanopowders

被引：11

作者：

Woo, Boon Kuan ^{[1
]}

Luo, Zhiping ^{[2
]}

Li, Yang ^{[3
]}

Singh, Surinder P. ^{[3
]}

Joly, Alan G. ^{[4
]}

Hossu, Marius ^{[1
]}

Liu, Zhongxin ^{[1
,5
]}

Chen, Wei ^{[1
]}

机构：

[1] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

[2] Texas A&M Univ, Mat Sci & Engn Program, Microscopy & Imaging Ctr, College Stn, TX 77843 USA

[3] Univ Puerto Rico, Dept Engn Sci & Mat, Mayaguez, PR 00680 USA

[4] Pacific NW Natl Lab, Richland, WA 99352 USA

[5] Hainan Univ, Dept Mat & Chem Engn, Haikou 570228, Peoples R China

来源：

OPTICAL MATERIALS | 2011年 / 33卷 / 08期

关键词：

CaZnGe2O6:Tb3+; Afterglow; X-ray luminescence; Photoluminescence; Zno nanoparticles; Enhancement; PERSISTENT LUMINESCENCE; ZINC-OXIDE; NANOPARTICLES; EMISSION; ILLUMINATION; RADIATION; THERAPIES;

D O I：

10.1016/j.optmat.2011.03.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

CaZnGe2O6:Tb3+ afterglow phosphors were prepared by solid state reaction using organic coated ZnO nanopowders and their photoluminescence. X-ray luminescence and afterglow properties were investigated. The CaZnGe2O6:Tb3+ samples emit a green luminescence at 548 nm attributed to the D-5(4)-E-7(5) transition of Tb3+. It was observed that the replacement of bulk ZnO by ZnO nanopowder in the sample synthesis increases the luminescence intensity. By adjusting the mass ratio of bulk ZnO to nanopowder ZnO, the photoluminescence intensity, X-ray luminescence intensity, and afterglow efficiency are improved. The optimized sample made with a 0.71 ratio of nano ZnO to bulk ZnO has a factor of four enhancement in X-ray luminescence, photoluminescence and afterglow intensities in comparison with the sample made with 100% bulk ZnO. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1283 / 1290

页数：8

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