Synthesis improvement of Yb3+-activated SnO2 nanocrystals

被引：5
作者：
Callone, Emanuela [1 ]
Carturan, G. [1 ]
Jestin, Yoann [2 ]
Ferrari, Maurizio [2 ]
机构：
[1] Univ Trent, Dept Mat Engn & Ind Technol, Via Mesiano 77, I-38050 Trento, Italy
[2] CNR, IFN, CSMFO Grp, I-38050 Trento, Italy
来源：
DOPED NANOPOWDERS: SYNTHESIS, CHARACTERISATION APPLICATIONS | 2007年 / 128卷
关键词：
ytterbium; doped-nanopowders; hydrolytic route; photoluminescence;
D O I：
10.4028/www.scientific.net/SSP.128.31
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Yb3+ doped SnO2 nanocrystals were synthesized, using the hydrolytic route in the presence of starch as the size stabilizer. Starting from salt precursors, the nanopowders obtained with various Yb3+ loads are thermally stable up to 600 degrees C. They were characterized by XRD, solid state NMR, TEM, ICP and TG-MS techniques. The nanocrystal Cassiterite structure, with a size of a few nanometers (<6 nm), was identified by XRD, NMR and Raman measurements confirming a homogeneous dispersion of Yb3+ ions in the lattice. The preliminary assessment of the spectroscopic features of nanocrystals was performed by absorption and photoluminescence spectroscopy. The typical Yb3+ absorption peak, centred at 977 mn, and an intense F-2(5/2)-> F-2(7/2) Yb3+ emission band were observed.
引用
收藏
页码：31 / +
页数：3
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