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

页码：3988 / 3990

页数：3

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