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Understanding Enhanced Upconversion Luminescence in Oxyfluoride Glass-Ceramics Based on Local Structure Characterizations and Molecular Dynamics Simulations
Ali, Mohamed A.; Ren, Jinjun; Liu, Xiaofeng; Qiao, Xvsheng; Qiu, Jianrong; qjr@scut.edu.cn
2017
发表期刊J. Phys. Chem. C
卷号121期号:28页码:15384
摘要In this Article, large enhancement in upconversion (UC) luminescence was verified in a transparent aluminosilicate glass-ceramics (GCs) containing CaF2 nanocrystals (NCs) codoped with Era(3+) and Yb3+ ions. On the basis of the joint spectroscopic and structural characterizations, we suggest that the precipitation of fluoride NCs is correlated with the preexistence of the fluoride-rich domains in the as-melt glass, which is supported by scanning transmission electron microscopy (STEM) and reproduced by molecular dynamics (MD) simulation. The precipitation of the fluoride NCs starts from a phase-separated as-melt glass consisting of fluorine-rich and oxygen-rich domains, while the spatial distribution of rare earth (RE) ions and the vibration energies of the bonds connecting RE ions remain almost unchanged after crystallization. In the GCs, both the fluoride domain and the oxygen-containing polyhedrons surrounding RE ions experience significant ordering, which may affect the UC emission for both glasses and GCs. We therefore attribute the enhanced UC emissions of the GCs to the long-range structural ordering and the change of site symmetry surrounding RE ions, rather than the preference of RE ions in migrating from fluoride-rich phase to the fluoride NCs. Our results may have strong implications for a better understanding of the enhanced UC emission in similar oxyfluoride GCs.
文章类型Article
部门归属材料
DOI10.1021/acs.jpcc.7b04599
资助者National Natural Science Foundation of China [61475047, 11504323]; State Key Laboratory of Precision Spectroscopy (East China Normal University); State Key Laboratory of High Field Laser Physics (Shanghai Institute of Optics and Fine Mechanics); Science and Technology Department of Zhejiang Province [2015C31045]; Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques; South China University of Technology ; National Natural Science Foundation of China [61475047, 11504323]; State Key Laboratory of Precision Spectroscopy (East China Normal University); State Key Laboratory of High Field Laser Physics (Shanghai Institute of Optics and Fine Mechanics); Science and Technology Department of Zhejiang Province [2015C31045]; Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques; South China University of Technology ; National Natural Science Foundation of China [61475047, 11504323]; State Key Laboratory of Precision Spectroscopy (East China Normal University); State Key Laboratory of High Field Laser Physics (Shanghai Institute of Optics and Fine Mechanics); Science and Technology Department of Zhejiang Province [2015C31045]; Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques; South China University of Technology ; National Natural Science Foundation of China [61475047, 11504323]; State Key Laboratory of Precision Spectroscopy (East China Normal University); State Key Laboratory of High Field Laser Physics (Shanghai Institute of Optics and Fine Mechanics); Science and Technology Department of Zhejiang Province [2015C31045]; Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques; South China University of Technology
收录类别SCI
资助者National Natural Science Foundation of China [61475047, 11504323]; State Key Laboratory of Precision Spectroscopy (East China Normal University); State Key Laboratory of High Field Laser Physics (Shanghai Institute of Optics and Fine Mechanics); Science and Technology Department of Zhejiang Province [2015C31045]; Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques; South China University of Technology ; National Natural Science Foundation of China [61475047, 11504323]; State Key Laboratory of Precision Spectroscopy (East China Normal University); State Key Laboratory of High Field Laser Physics (Shanghai Institute of Optics and Fine Mechanics); Science and Technology Department of Zhejiang Province [2015C31045]; Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques; South China University of Technology ; National Natural Science Foundation of China [61475047, 11504323]; State Key Laboratory of Precision Spectroscopy (East China Normal University); State Key Laboratory of High Field Laser Physics (Shanghai Institute of Optics and Fine Mechanics); Science and Technology Department of Zhejiang Province [2015C31045]; Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques; South China University of Technology ; National Natural Science Foundation of China [61475047, 11504323]; State Key Laboratory of Precision Spectroscopy (East China Normal University); State Key Laboratory of High Field Laser Physics (Shanghai Institute of Optics and Fine Mechanics); Science and Technology Department of Zhejiang Province [2015C31045]; Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques; South China University of Technology
WOS记录号WOS:000406355700045
引用统计
文献类型期刊论文
条目标识符http://ir.siom.ac.cn/handle/181231/28216
专题中科院强激光材料重点实验室
通讯作者qjr@scut.edu.cn
作者单位中国科学院上海光学精密机械研究所
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GB/T 7714
Ali, Mohamed A.,Ren, Jinjun,Liu, Xiaofeng,et al. Understanding Enhanced Upconversion Luminescence in Oxyfluoride Glass-Ceramics Based on Local Structure Characterizations and Molecular Dynamics Simulations[J]. J. Phys. Chem. C,2017,121(28):15384.
APA Ali, Mohamed A.,Ren, Jinjun,Liu, Xiaofeng,Qiao, Xvsheng,Qiu, Jianrong,&qjr@scut.edu.cn.(2017).Understanding Enhanced Upconversion Luminescence in Oxyfluoride Glass-Ceramics Based on Local Structure Characterizations and Molecular Dynamics Simulations.J. Phys. Chem. C,121(28),15384.
MLA Ali, Mohamed A.,et al."Understanding Enhanced Upconversion Luminescence in Oxyfluoride Glass-Ceramics Based on Local Structure Characterizations and Molecular Dynamics Simulations".J. Phys. Chem. C 121.28(2017):15384.
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