Photoluminescence properties of Dy³⁺-doped oxyfluoride germanosilicate optical glass-ceramics

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• 作者：Yunlong He ; Gaoling Zhao ; Huijun Qin ; Jianxun Wang ; Gaorong Han
• 关键词：Oxyfluoride germanosilicate glass ; Dy2O3 ; Photoluminescence ; Glass-ceramics
• 刊名：Optics Communications
• 出版年：15 March, 2014
• 年：2014
• 卷：315
• 期：Complete
• 页码：59-62
• 全文大小：1380 K

文摘

Dy³⁺-doped oxyfluoride germanosilicate glass and glass-ceramics were fabricated using a GeO₂-SiO₂-Al₂O₃-B₂O₃-BaO-BaF-Dy₂O₃ system. Differential thermal analysis, X-ray diffraction, and photoluminescence spectra were carried out to study the effects of the concentration of F^{鈭?/sup> ions and the heat treatment on structure and optical properties of the samples. The results showed that the glass has the strongest luminescence intensity when BaF₂ totally substitutes BaO. Moreover, Ba₃AlF₉ nanocrystal was formed in the glass matrix after being heat treated at 560-600 掳C for 2-8 h. The glass after heat treatment had stronger intensity of luminescence than the precursor glass. The intensity of luminescence reaches an optimum when it was heat treated at 580 掳C for 4 h.}