Yb3+ and Tm3+ concentration-dependent structural and optical properties of hexagonal NaGdF4 nanocrystals

被引：9
|
作者：
Noculak, Agnieszka [1 ]
Fhui, Yong Shiew [1 ]
Banski, Mateusz [1 ]
Misiewicz, Jan [1 ]
Podhorodecki, Artur [1 ]
机构：
[1] Wroclaw Univ Technol, Inst Phys, PL-50370 Wroclaw, Poland
来源：
JOURNAL OF NANOPARTICLE RESEARCH | 2014年 / 16卷 / 05期
关键词：
Upconversion; NaGdF4; Nanocrystals; Lanthanides; Spectroscopy; Visualization in biotissues; Luminescence; UP-CONVERSION LUMINESCENCE; BLUE; PHASE; SIZE; UNIFORM; GREEN; LIGHT;
D O I：
10.1007/s11051-014-2396-0
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We performed a detailed investigation of the influence of Yb3+ and Tm3+ ions concentration on the structural and optical properties of NaGdF4 nanocrystals. XRD and TEM allowed us to identify a crystal phase and measure the diameter of synthesized nanocrystals. The results have shown that crystal phase and size were conserved for various Tm3+ doping. However, for different Yb3+ ions concentration, NCs diameter varied from 20 to 100 nm. Based on the optical investigations (both in visible and NIR range), we determined the optimum doping conditions for efficient emission from (1)G(4) and D-1(2) states, which correspond to green/red and blue emission, respectively.
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页数：9
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