| 光谱学与光谱分析 |
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| Preparation and Luminescent Performance of Tb3+ Doped SiO2 Core-Shell Nanoparticles |
| YAN Zhi-yun1, HU Xiao-yun1*, YE Yan-xi1, ZHANG De-kai1, MIAO Hui1, FAN Jun2, JIANG Zhen-yi3 |
1. Physics Department of Northwest University, Xi’an 710069, China
2. Chemical Engineering Institute of Northwest University, Xi’an 710069, China
3. Modern Physics Department of Northwest University, Xi’an 710069, China |
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Abstract The authors synthesized the core-shell nanoparticles of SiO2-coated SiO2∶Tb3+ by using sol-gel method (SiO2∶Tb3+@SiO2), and studied the influence of core-shell ratio and preparation craftwork on its luminescence properties. The photograph of TEM and EDS showed that SiO2∶Tb3+ were coated successfully by SiO2. The authors found that the samples of SiO2∶Tb3+@SiO2 prepared by mixing of core and shell after shell aging with the ratio of core/shell being 1.2 g/25 mL had the stronger fluorescence intensity. Time-resolved spectra showed that the SiO2∶Tb3+@SiO2 had longer fluorescence life time than SiO2∶Tb3+.
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Received: 2010-12-24
Accepted: 2011-03-20
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Corresponding Authors:
HU Xiao-yun
E-mail: hxy3275@nwu.edu.cn
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