Abstract
The energy transfer and upconversion emission of Tm3+/Tb3+/Yb3+ co-doped transparent glass-ceramics 50SiO2–10AlF3–30BaF2–5TiO2–4LaF3 (SABTL) containing Ba2LaF7 nanocrystals under the changing of heat treatment temperatures and concentrations of Tm3+/Tb3+/Yb3+ ions were investigated. The structural investigation carried out by X-ray diffraction (XRD) and transmission electron microscopy evidenced the formation of cubic Ba2LaF7 nanocrystals. The efficiency upconversion emission of Tm3+/Tb3+/Yb3+ ions was observed in the glass-ceramics. The upconversion emission and energy transfer between Tm3+ and Tb3+ ions were investigated with the Yb3+ ions cooperatively upconversion emission, energy transfer between Tm3+ and Tb3+ ions.
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