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Your search keyword '"Cui, Zhanchen"' showing total 7 results
Start Over Author "Cui, Zhanchen" Publication Year Range Last 50 years Journal materials letters
7 results on '"Cui, Zhanchen"'

7. Preparation and characterization of sol–gel derived Er3+–Yb3+ codoped SiO2/TiO2 core–shell nanoparticles

Author

Pang, Shujie, Li, Xianliang, Shi, Zuosen, Yang, Guang, and Cui, Zhanchen

Subjects
*NANOPARTICLES, *RARE earth ions, *SILICA, *TITANIUM dioxide, *HYDROLYSIS, *OPTICAL materials, *ALKOXIDES, *TRANSMISSION electron microscopy
Abstract

Abstract: The Er3+–Yb3+ codoped silica/titania core–shell nanoparticles were prepared by hydrolysis of titanium alkoxide precursors in the presence of lanthanide ions via sol–gel method. The structure of the particles was characterized by field emission scanning electron microscopy and transmission electron microscopy. The diameter of the silica core is about 50nm. The thickness of the titania shell is about 4nm. A typical doping density of Er3+ in the titania shell is 4.51at.%, and the one of Yb3+ is 12.20at.%. The UV–vis–NIR absorption spectra and the photoluminescence spectra were also investigated. [Copyright &y& Elsevier]

Published
2010
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