Abstract
NaYF 4:Yb, Tm/TiO 2 core/shell nanoparticles were synthesized by a two-step method. First, the NaYF 4:Yb, Tm nanocrystals were prepared using solvothermal technology; then, TiO 2 shells were deposited on the nanocrystals by the hydrolysis of titanium ethoxide (TEOT) to form core/shell structures. By controlling the reaction time, we can adjust the thickness of TiO 2 shell and thereby the weight percentage of TiO 2 in the core/shell nanoparticles. The effect of shell thickness on the upconversion fluorescence of NaYF 4:Yb, Tm nanocrystals was investigated in detail.
Original language | English |
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Pages (from-to) | 9761-9764 |
Number of pages | 4 |
Journal | Journal of Nanoscience and Nanotechnology |
Volume | 11 |
Issue number | 11 |
DOIs | |
State | Published - 2011 |
Externally published | Yes |
Keywords
- Core/Shell
- NaYF
- Rare Earth
- TiO
- Upconversion Luminescence