Photoluminescence and persistent luminescence in Bi3+-doped Zn2GeO4 phosphors

被引：43

作者：

Zhang, Shaoan ^{[1
]}

Hu, Yihua ^{[1
]}

Chen, Ren ^{[1
]}

Wang, Xiaojuan ^{[1
]}

Wang, Zhonghua ^{[1
]}

机构：

[1] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Guangdong, Peoples R China

来源：

OPTICAL MATERIALS | 2014年 / 36卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Photoluminescence properties; Persistent luminescence; Optical materials; ENERGY-TRANSFER; BI3+; NANOPARTICLES; EMISSION; EU2+;

D O I：

10.1016/j.optmat.2014.05.037

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bi3+-doped Zn2GeO4 were prepared by the high temperature solid-state reaction method. The phase purity and crystallinity of Zn2GeO4:Bi3+ samples were characterized by X-ray diffraction (XRD). The Photoluminescence and persistent properties of Zn2GeO4:Bi3+ phosphors were investigated through the excitation spectra, the emission spectra, the persistent luminescence, the persistent decay curves and thermoluminescence spectra. Excitation into the host absorption, Zn2GeO4:Bi3+ gives a blue broadband emission; a bluish-green emission of Zn2GeO4:Bi3+ is obtained for the direct excitation of Bi3+ under 300 nm excitation. Zn2GeO4:Bi3+ shows a weak persistent luminescence after irradiation by 254 nm UV light for 3 min. The photoluminescence and persistent luminescence mechanism of Zn2GeO4:Bi3+ were discussed in detail. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1830 / 1835

页数：6

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