| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Crystallization Characteristics and Luminescent Properties of Oxyfluoride Glass-ceramic Doped with Yb3+ |
| LI Mengxuan, LIU Hongbo, LIU Jianxiang, ZHU Mingyan, WANG Yi Guizhou
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| Metallurgical Chemical Industry Research Institute, Guiyang 550007 |
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Abstract Using Al2O3, SiO2, Na2CO3, CaF2,PrF3 and YbF3 as raw material, basic oxyfluoride glass were prepared through high temperature melting and annealing processes, finally, glass-ceramics doped with Pr3+-Yb3+ was prepared under adaptive heat treatment systems. The crystallization characteristic and luminescent properties which contact with different Yb3+ concentration was investigated by DTA, XRD, SEM and spectrophotometer analytical testing methods. The results show that with the increase of Yb3+ doping concentration, the crystallization temperature of the base glass decreases first and then increases, Yb3+ will join into nano-lattice of CaF2 then form Ca0.8Yb0.2F2.2 solid solution, also the conent and grain size of the crystalline phase in this glass ceramic are both increased. The emission peak intensity in the visible regions decreasing with the increase concentration of Yb3+ , yet the emission peak in near infrared region was increases, which shows that in the excited state 3P0 level of Pr3+ will transfer more energy to the 2F5/2→2F7/2 transition of Yb3+ then strengthen the near-infrared emission.
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Published: 12 July 2019
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2019, Vol. 33 
