Growth, structure and optical spectroscopic properties of dysprosia-doped cubic yttria stabilized zirconia (YSZ) single crystals
Growth, structure and optical spectroscopic properties of dysprosia-doped cubic yttria stabilized zirconia (YSZ) single crystals
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掺镝立方氧化钇稳定氧化锆（YSZ）单晶的生长、结构和光学光谱性质
DOI：
10.1016/j.jlumin.2020.117766
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发表时间：
2021-03
影响因子：
3.6
通讯作者：
Wen Deng
中科院分区：
文献类型：
--
作者：
Xing Hong;Shoulei Xu;Xiangyu Wang;Daini Wang;Siyao Li;Bernard A. Goodman;Wen Deng
采用光学浮区法制备了不同掺杂量的氧化钇稳定氧化锆（YSZ）单晶，并对其结构、光谱和光学性质进行了表征。粉末样品的X射线衍射（XRD）图谱和拉曼光谱表明，所有样品均具有立方结构，单晶体均表现出Dy 3+离子的4F 9/2→ 6 HJ（J = 9/2、11/2、13/2和15/2）的光发射跃迁。随着Dy 3+浓度的增加，4F 9/2→ 6 H13/2和4F 9/2→ 6 H15/2跃迁的衰减曲线显著降低，这主要是由于Dy 3+离子之间的相互作用随着浓度的增加而增加。这种浓度猝灭机制进行了详细研究，并观察到最高的发光度与0.5摩尔%的Dy 2 O3的单晶。计算出临界能量转移距离RC = 1.86 nm，黄橙光的色坐标（CIE）约为（0.53，0.45）。总之，这些结果表明YSZ：xDy 2 O3单晶适合用作黄光激光器。
Single crystals of yttria stabilized zirconia (YSZ) doped with various dysprosia (Dy2O3) contents have been prepared by the optical floating zone method, and their structural, spectroscopic, and optical properties characterized. X-ray diffraction (XRD) patterns and Raman spectroscopy of powdered samples showed that all had a cubic structure, and single crystals exhibited optical emission transitions,4F9/2→6HJ(J = 9/2, 11/2, 13/2 and 15/2) from the Dy3+ion. The decay profiles for the4F9/2→6H13/2and4F9/2→6H15/2transitions decreased significantly with the higher Dy3+concentrations; this is interpreted as mainly due to increased interactions between Dy3+ions as their concentrations increased. This concentration quenching mechanism was investigated in detail, and the highest luminosity was observed with the single crystal with 0.5 mol% Dy2O3. The critical energy transfer distance was calculated asRC= 1.86 nm, and the chromaticity coordinate (CIE) for the yellow-orange emitted light was about (0.53, 0.45). Overall, these results indicate that YSZ:xDy2O3single crystals are suitable for use as yellow lasers.
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