Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/29742
Title: Enhanced ∼ 2 μm and upconversion emission from Ho-Yb codoped oxyfluoride glass ceramics
Authors: Bai, G
Tao, L
Li, K
Hu, L
Tsang, YH 
Keywords: 2 μm
Glass ceramics
Ho 3+
Nanocrystals
Upconversion luminescence
Issue Date: 2013
Publisher: Elsevier Science Bv
Source: Journal of non-crystalline solids, 2013, v. 361, no. 1, p. 13-16 How to cite?
Journal: Journal of Non-Crystalline Solids 
Abstract: Enhanced 2 μm and upconversion emission from Ho3+-Yb 3+ codoped oxyfluoride silicate glass ceramics containing nanocrystals Ba2YbF7 was demonstrated. Ho 3+-Yb3+ codoped oxyfluoride silicate glass and glass ceramics containing nanocrystals Ba2YbF7 were fabricated. Fluoride nanocrystals Ba2YbF7 were successfully precipitated in glass matrix, which was confirmed by the X-ray diffraction (XRD), and transmission electron microscopy (TEM) with energy dispersive X-ray (EDX) spectrometer results. 2 μm and upconversion emissions were obtained from these glass examples under 980 nm excitation. Compared with the precursor glass, enhanced 2 μm and upconversion luminescence was measured in the glass ceramics, which were due to scattering by the formed nanocrystals, lower phonon energy obtained in the nanocrystals and efficient Yb3+-Ho 3+ interionic interactions. Therefore, the material investigated in this study could find potential application in 2 μm laser gain media or upconversion light material.
URI: http://hdl.handle.net/10397/29742
ISSN: 0022-3093
DOI: 10.1016/j.jnoncrysol.2012.10.012
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