Structure and up-conversion luminescence in sol-gel derived Er3+-Yb3+ co-doped SiO2:PbF2 nano-glass-ceramics
Structure and up-conversion luminescence in sol-gel derived Er3+-Yb3+ co-doped SiO2:PbF2 nano-glass-ceramics
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DOI：
10.1016/j.optmat.2009.06.013
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发表时间：
2009-11-01
影响因子：
3.9
通讯作者：
Rodriguez, V. D.
中科院分区：
文献类型：
--
作者：
del-Castillo, J.;Yanes, A. C.;Rodriguez, V. D.
采用溶胶-凝胶法制备了掺Yb ~（3+）和Er ~（3+）的90（SiO_2）_10（PbF_2）透明纳米微晶玻璃。X射线衍射和高分辨率透射电子显微镜分析指出，根据热处理条件，在纳米玻璃陶瓷中沉淀出一定直径的立方β-PbF 2纳米晶体，其直径从10 nm到20 nm不等。在这些纳米晶体中的Yb 3+和Er 3+掺杂剂的掺入已被证实的发光光谱的签名。在980 nm泵浦下，探测到了上转换发光。利用标准色度图分析了上转换发光随泵浦功率变化的颜色调谐特性。这种调谐器打开了上转换荧光粉和三维光学记录的应用。(C)2009爱思唯尔有限公司版权所有。
Transparent oxyfluoride nano-glass-ceramics 90(SiO2)10(PbF2) co-doped with 0.3 Yb3+ and 0.1 Er3+ (mol%) have been prepared by thermal treatment of precursor sol-gel glasses. X-ray diffraction and high resolution transmission electron microscopy analysis pointed out a precipitation of cubic beta-PbF2 nanocrystals of certain diameter in nano-glass-ceramics varying from 10 to 20 nm depending on heat treatment conditions. The incorporation of Yb3+ and Er3+ dopants in these nanocrystals has been confirmed by signatures of luminescence spectroscopy. Up-conversion luminescence pumped at 980 nm has been detected. Colour tuneability of up-conversion luminescence varying pump power has been analyzed in terms of standard chromaticity diagram. This tuneability opens applications for up-conversion phosphors and three-dimensional optical recording. (C) 2009 Elsevier B.V. All rights reserved.