Enhanced photoluminescence of Eu^2 +-Pr^3 + ions in Ga₂S₃ nanocrystals embedded chalcohalide glasses ceramics

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• 作者：Weina Xu ; Jing Ren ; Zhihuan Zhang ; Guorong Chen ; Deshuang Kong ; Changjun Gu ; Chunming Chen ; Linren Kong
• 关键词：Chalcohalide glasses ; Glass ceramics ; Eu2  ; +&ndash ; Pr3  ; + co-doped ; Controlled crystallization ; Nano-crystals
• 刊名：Journal of Non-Crystalline Solids
• 出版年：1 December, 2013
• 年：2013
• 卷：381
• 期：Complete
• 页码：65-67
• 全文大小：693 K

文摘

A new down-conversion chalcohalide glass ceramics with a composition of 37.5GeS₂-22.5Ga₂S₃-40CsCl (in mol %) doped with 0.15 Eu^2 + and 0.1 Pr^3 + (in mol %) is prepared. The crystallization is characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). Ga₂S₃ crystallites in the nano-scale (20-80 nm) are obtained by the controlled crystallization. Visible photoluminescence properties of the glass and transparent glass ceramics are investigated. The mechanism responsible for the enhanced luminescence of both Eu^2 + and Pr^3 + in the glass ceramics was discussed from the point of view of the reduced phonon energy effect.