掺杂Yb~(3+)的氟氧化物微晶玻璃的析晶特性及发光性能
|
摘要
本实验以Al_2O_3、SiO_2、Na_2CO_3、CaF_2、PrF_3、YbF_3为原料,采用传统高温熔融工艺制备氟氧基质玻璃,再晶化处理制得Pr~(3+)-Yb~(3+)共掺杂氟氧微晶玻璃。利用差热分析(DTA)仪、X射线衍射(XRD)仪、扫描电子显微镜(SEM)以及荧光光度计等研究Yb~(3+)掺杂浓度对氟氧微晶玻璃晶化行为及发光性能的影响。结果表明:随着Yb~(3+)掺杂浓度的增大,基础玻璃析晶温度先降低后升高;Yb~(3+)会进入基础玻璃的析出相即CaF_2纳米晶格中,形成Ca_(0.8)Yb_(0.2)F_(2.2)固溶体,微晶玻璃中结晶相的含量以及晶粒尺寸都有所增大。Pr~(3+)-Yb~(3+)共掺微晶玻璃中,Pr~(3+)参与了Yb~(3+)的近红外发光,可见光区域的发射峰强度随着Yb~(3+)浓度的增大而递减,而近红外区域的发射峰却增强。这揭示了Pr~(3+)-Yb~(3+)之间的能量传递过程,即处于Pr~(3+)激发态的~3P_0能级高效地将能量传递给Yb~(3+),并通过~2F_(5/2)→~2F_(7/2)跃迁转化为近红外发光。
Using Al_2O_3, SiO_2, Na_2CO_3, CaF_2,PrF_3 and YbF_3 as raw material, basic oxyfluoride glass were prepared through high temperature melting and annealing processes, finally, glass-ceramics doped with Pr~(3+)-Yb~(3+) was prepared under adaptive heat treatment systems. The crystallization characteristic and luminescent properties which contact with different Yb~(3+) concentration was investigated by DTA, XRD, SEM and spectrophotometer analytical testing methods. The results show that with the increase of Yb~(3+) doping concentration, the crystallization temperature of the base glass decreases first and then increases, Yb~(3+) will join into nano-lattice of CaF_2 then form Ca_(0.8)Yb_(0.2)F_(2.2) 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 Yb~(3+), yet the emission peak in near infrared region was increases, which shows that in the excited state ~3P_0 level of Pr~(3+) will transfer more energy to the ~2F_(5/2)→~2F_(7/2) transition of Yb~(3+) then strengthen the near-infrared emission.
Using Al_2O_3, SiO_2, Na_2CO_3, CaF_2,PrF_3 and YbF_3 as raw material, basic oxyfluoride glass were prepared through high temperature melting and annealing processes, finally, glass-ceramics doped with Pr~(3+)-Yb~(3+) was prepared under adaptive heat treatment systems. The crystallization characteristic and luminescent properties which contact with different Yb~(3+) concentration was investigated by DTA, XRD, SEM and spectrophotometer analytical testing methods. The results show that with the increase of Yb~(3+) doping concentration, the crystallization temperature of the base glass decreases first and then increases, Yb~(3+) will join into nano-lattice of CaF_2 then form Ca_(0.8)Yb_(0.2)F_(2.2) 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 Yb~(3+), yet the emission peak in near infrared region was increases, which shows that in the excited state ~3P_0 level of Pr~(3+) will transfer more energy to the ~2F_(5/2)→~2F_(7/2) transition of Yb~(3+) then strengthen the near-infrared emission.
引文
1 Fedorov P P,Luginina A A,Popov A I.Journal of Fluorine Chemistry,2015,172,20.
2 Antuzevics A,Kemere M,Ignatans R.Journal of Non-Crystalline Solids,2016,449,29.
3 Mrinmoy G,Basudeb K.Journal of Alloys and Compounds,2016,678,360.
4 Fumiya N,Takumi K,Go O,et al.Ceramics International,2017,43(9),7211.
5 Anatolijs S,Guna K.Journal of the European Ceramic Society,2015,35(13),3665.
6 Imanieh M H,Martín I R,Nadarajah A,et al.Journal of Luminescence,2016,172,201.
7 Olfa M,Julien M,Brigitte B,et al.Optical Materials,2016,60,235.
8 Michalina W,Tomasz L,Anna S.Journal of Alloys and Compounds,2017,696,619.
9 Kaushik B,Sathravada B,Debarati G,et al.Journal of Alloys and Compounds,2014,608,266.
10 Huang J,Huang Y T,Wu T J,et al.Journal of Luminescence,2015,157,215.
11 Feng D D,Zhu Y M,Li F F.Journal of the European Ceramic Society,2016,36(10),2579.
12 Cai J J,Wei X T,Hu F F,et al.Ceramics International,2016,42(12),13990.
2 Antuzevics A,Kemere M,Ignatans R.Journal of Non-Crystalline Solids,2016,449,29.
3 Mrinmoy G,Basudeb K.Journal of Alloys and Compounds,2016,678,360.
4 Fumiya N,Takumi K,Go O,et al.Ceramics International,2017,43(9),7211.
5 Anatolijs S,Guna K.Journal of the European Ceramic Society,2015,35(13),3665.
6 Imanieh M H,Martín I R,Nadarajah A,et al.Journal of Luminescence,2016,172,201.
7 Olfa M,Julien M,Brigitte B,et al.Optical Materials,2016,60,235.
8 Michalina W,Tomasz L,Anna S.Journal of Alloys and Compounds,2017,696,619.
9 Kaushik B,Sathravada B,Debarati G,et al.Journal of Alloys and Compounds,2014,608,266.
10 Huang J,Huang Y T,Wu T J,et al.Journal of Luminescence,2015,157,215.
11 Feng D D,Zhu Y M,Li F F.Journal of the European Ceramic Society,2016,36(10),2579.
12 Cai J J,Wei X T,Hu F F,et al.Ceramics International,2016,42(12),13990.