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A simple, low-temperature route to synthesize aqueous-dispersible Yb3+-Er3+ co-doped hexagonal LaF3 nano-crystals for up-conversion fluorescence

Shan, Guobin and Andrews, Mark P. and Gonzalez, Timothy and Djeghelian, Hagop (2008) A simple, low-temperature route to synthesize aqueous-dispersible Yb3+-Er3+ co-doped hexagonal LaF3 nano-crystals for up-conversion fluorescence. Materials Letters, 62 (26). 4187 - 4190.

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Official URL: http://www.sciencedirect.com/science/article/B6TX9...

Abstract

Aqueous-dispersible Yb3+-Er3+ co-doped hexagonal LaF3 nano-crystals were synthesized by a low-temperature aqueous phase approach in the presence of D-glucose. These nano-crystals are about 15-20 nm in rectangular shape and are easily dispersed in water, producing a transparent colloidal solution; they can also be precipitated and separated by the addition of NaOH. The morphology, crystal structure, fluorescence properties of these nano-crystals were analyzed by TEM, XRD, and spectroscopy, respectively. Furthermore, these nano-crystals exhibit red and green fluorescence in the visible spectral region when they are excited at 980 nm. The nano-crystals can be coated by a silica shell and their shape is not changed, which will be useful in the application of biological labeling.

Item Type:Article
Uncontrolled Keywords:Silica shell
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanostructured materials
ID Code:6619
Deposited By:SPI
Deposited On:10 Feb 2010 14:29
Last Modified:10 Feb 2010 14:29

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