Synthesis Improvement of Yb³⁺-Activated SnO₂ Nanocrystals

Abstract:

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 °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 nm, and an intense 2F5/2→ 2F7/2 Yb3+ emission band were observed.

• Periodical: Solid State Phenomena (Volume 128)
• Pages: 31-40
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.128.31
• Online since: October 2007
• Authors: Emanuela Callone, Giovanni Carturan, Yoann Jestin, Maurizio Ferrari
• Keywords: Doped-Nanopowders, Hydrolytic Route, Photoluminescence (PL), Ytterbium

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