乙二醇
纳米晶
材料科学
化学工程
纳米技术
化学
工程类
作者
Congling Li,Mei Yuan-yuan,Jichang Xie,Wenyu Dai,Gaohui Du,Zhengquan Li
标识
DOI:10.1016/j.jallcom.2013.01.105
摘要
YF3 is an important host matrix for lanthanides doping to give both strong down- and up-conversion luminescence with high quantum efficiency. Controlled synthesis of YF3 nanocrystals is an efficient route to obtain different YF3 nanocrystals satisfying for different applications and controlling their fluorescence. Here we present a facile approach to selectively synthesize different YF3 nanocrystals using ethylene glycol (EG) as solvent. Five distinct morphologies can be conveniently obtained through changing the fluoride sources and chelating ligands in the EG solution. The prepared products were characterized and their formation mechanisms were proposed. After doped with different lanthanides, these samples can give both down- and up-conversion luminescence, suggesting that they are good nanoparticulate hosts. A comparison of fluorescent intensities between different products has been made, offering us an opportunity to study the relationship between fluorescence intensities and morphologies of YF3 nanostructures. Our results suggest that formation of assemblies is a feasible way to enhance the fluorescence of lanthanide nanocrystals in addition to the size control.
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