Characterization of interactive up-conversion luminescence mechanisms in Tm3+/Ho3+/Yb3+ doped yttria stabilized zirconia single crystals
Characterization of interactive up-conversion luminescence mechanisms in Tm3+/Ho3+/Yb3+ doped yttria stabilized zirconia single crystals
复制标题
DOI：
10.1016/j.optmat.2021.111827
复制
发表时间：
2021-11
影响因子：
3.9
通讯作者：
Wen-Xin Wu;Daini Wang;Yihua Pan;Yuhua Yang;Peng Zhang;Shoulei Xu;B. Goodman;W. Deng
中科院分区：
文献类型：
--
作者：
Wen-Xin Wu;Daini Wang;Yihua Pan;Yuhua Yang;Peng Zhang;Shoulei Xu;B. Goodman;W. Deng
采用光学浮区法制备了Tm 2 O3、Ho 2 O3和Yb 2 O3掺杂的YSZ单晶，研究了Tm 3+、Ho 3+和Yb 3+掺杂量对YSZ发光性能的影响。粉末X射线衍射（XRD）结果表明，所有样品在室温下均为立方相，结晶度良好，光学带宽约为4.63 eV，适合于发光产品的开发。在980 nm（1.33 eV）激光激发下，Tm ~（3+）的蓝色发射峰随Tm ~（3+）含量的增加而增加，在0.30 mol% Tm ~（2+）时达到最大值，然后随Tm ~（3+）浓度的增加而减小，这是由于电偶极相互作用引起的猝灭。在2.42 eV（539 nm）和2.36 eV（552 nm）处的绿色发射峰的积分强度之比表明，随着Tm ~（3+）浓度的增加，Ho ~（3+）的5 F4能级到5S 2能级的无辐射跃迁几率减小。研究还表明，Ho ~（3+）和Tm ~（3+）之间存在着竞争，并存在着Ho ~（3+）向Tm ~（3+）的直接能量转移。因此，在掺杂有稀土离子的组合的YSZ中，发光性质由不同类型的稀土离子之间的能量转移过程的组合以及单个离子的能量转移过程的组合确定，并且因此提供了微调来自这种晶体的发射以产生具有强烈发光性质的新一代材料的机会。
Yttria stabilized zirconia (YSZ) single crystals doped with Tm2O3, Ho2O3, and Yb2O3were prepared by the optical floating zone method in order to investigate the effects of varying the Tm3+, Ho3+, Yb3+contents on the luminescence properties. All samples were shown by powder X-ray diffractometry (XRD) to be in the cubic phase at room temperature with good crystallinity, and the optical bandwidth of about 4.63 eV indicates their suitability for the development of luminescence products. The blue emission peaks from Tm3+following excitation with a 980 nm (1.33 eV) laser increased with Tm3+content reached a maximum in the crystal with 0.30 mol% Tm2O3, and then decreased with higher Tm3+concentrations as a result of quenching caused by electric dipole interactions. The ratio of the integral intensities of the green emission peaks at 2.42 eV (539 nm) and 2.36 eV (552 nm) indicate that the probability of the non-radiative transition from the5F4level of Ho3+to the5S2level decreases with increasing Tm3+concentration. This research also demonstrates that there was competition between Ho3+and Tm3+for the transfer of energy from excited Yb3+, and that there was also direct transfer of energy from Ho3+to Tm3+. Thus, in YSZ doped with a combination of rare earth ions, the luminescence properties are determined by a combination of energy transfer processes between the different types of rare earth ions, as well as those for the individual ions, and thus presents an opportunity for fine tuning emissions from such crystals to produce a new generation of materials with intense luminescence properties.