Hydrothermal synthesis and up-conversion luminescence of Ho3+/Yb3+co-doped CaF2

被引：0
|
作者：
杨征 [1 ]
郭崇峰 [1 ]
陈叶青 [2 ]
李琳 [1 ]
李婷 [1 ]
郑仲铉 [2 ]
机构：
[1] National Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base) in Shaanxi Province,Institute of Photonics & Photon-Technology, Northwest University
[2] Department of Physics, Pukyong National University
来源：
Chinese Physics B | 2014年 / 23卷 / 06期
基金：
中国国家自然科学基金;
关键词：
CaF2; nano-particles; up-conversion; hydrothermal synthesis;
D O I：
暂无
中图分类号：
O482.31 [发光学];
学科分类号：
摘要：
CaF2:Ho3+/Yb3+nano-particles with intense green up-conversion(UC) luminescence are successfully synthesized via a facile hydrothermal approach by using NH4F as the fluoride source and Na2EDTA as a chelating reagent. Powder Xray diffraction(XRD), transmission electron microscopy(TEM), field emission scanning electron microscopy(FE-SEM),and UC emission spectra are used to characterize the structures, shapes, and luminescent properties of the samples. The effects from fluoride sources and chelating reagents on the formations of CaF2nano-particles are investigated, and the formation process is also deduced. Under the excitation of a 980-nm laser diode, the samples each show a green up-conversion emission centered at 540 nm corresponding to the5S2/5F4→5I8transitions of Ho3+. Moreover, the UC mechanisms of Ho3+/Yb3+co-doped CaF2nano-particles are also discussed.
引用
收藏
页码：275 / 281
页数：7
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