Transparent glass ceramic containing Er3+:: CaF2 nano-crystals prepared by sol-gel method

被引：48
|
作者：
Zhou, Lihua [1 ]
Chen, Daqin [1 ]
Luo, Wenqin [1 ]
Wang, Yuansheng [1 ]
Yu, Yunlong [1 ]
Liu, Feng [1 ]
机构：
[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China
来源：
MATERIALS LETTERS | 2007年 / 61卷 / 18期
基金：
中国国家自然科学基金;
关键词：
glass ceramic; sol-gel; CaF2; nano-crystals; upconversion;
D O I：
10.1016/j.matlet.2007.01.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Er3+ doped SiO2-CaF2 transparent glass ceramic was prepared by sol-gel method. The microstructural evolution of the samples was studied with X-ray diffraction (XRD), transmission electron microscopy (TEM), and infrared spectra (IR). After heat-treatment at 900 degrees C, the Si-OH bonds and other organic groups were basically eliminated. The CaF, crystallites in the sample heat-treated at 900 degrees C are 10-20 nm in size, distributed homogeneously among the amorphous silica matrix. The efficient upconversion emission for Er3+4F9/2 -> I-4(15/2) transition was recorded under 980 nm excitation, which could be ascribed to the incorporation of Er3+ ions into the CaF2 nano-crystals with low phonon energy. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：3988 / 3990
页数：3
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