Zhu Bingjun, Yang Qianqian, Zhang Wenjie, Cui Shouxin, Yang Bing, Wang Qingru, Li Shuhong, Zhang Dong
School of Physical Science and Information Technology, Liaocheng University, Liaocheng 252059, China; Shandong Key Lab. of Optical Communication Science and Technology, Liaocheng University, Liaocheng 252059, China.
School of Physical Science and Information Technology, Liaocheng University, Liaocheng 252059, China; Shandong Key Lab. of Optical Communication Science and Technology, Liaocheng University, Liaocheng 252059, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2022 Jun 5;274:121101. doi: 10.1016/j.saa.2022.121101. Epub 2022 Mar 8.
Optical thermometer based on dual-mode fluorescence intensity ratiometric thermometry has been attracted more attention due to its higher sensitivity. In order to obtain optical thermal probe with high sensitivity, ZnTiO hexagonal prisms with hexagonal perovskite structure were fabricated by using self-assembly method, and Al ions were introduced into the crystal lattices of ZnTiO doped with Eu/Mn to improve the optical properties. The emission intensity assigned to Eu was enhanced about twice with the charge compensation of Al between Eu and Ti. While the luminescence ratio between the thermal coupled level of Eu revealed poor temperature dependence property. The emission assigned to E→A (713 nm) transition of Mn revealed an huge thermal quenching. Using the luminescence ratio between D→F (D→F) transition of Eu to E→A of Mn, the higher relative sensitivity of 2.7 %Kwas obtained. The charge compensation of Al improved the coordination and reduced the relative sensitivity, Sr =1.85 %K. The results suggested the potential application in optical temperature probes for ZnTiO: Mn,Eu phosphor.
基于双模荧光强度比率测温法的光学温度计因其较高的灵敏度而备受关注。为了获得高灵敏度的光学热探针，采用自组装方法制备了具有六方钙钛矿结构的ZnTiO六方棱柱，并将Al离子引入到掺杂Eu/Mn的ZnTiO晶格中以改善光学性能。在Eu和Ti之间通过Al进行电荷补偿后，归属于Eu的发射强度增强了约两倍。然而，Eu的热耦合能级之间的发光比率显示出较差的温度依赖性。归属于Mn的E→A（713nm）跃迁的发射显示出巨大的热猝灭。利用Eu的D→F（D→F）跃迁与Mn的E→A之间的发光比率，获得了2.7%K的较高相对灵敏度。Al的电荷补偿改善了配位并降低了相对灵敏度，Sr = 1.85%K。结果表明ZnTiO:Mn,Eu荧光粉在光学温度探针方面具有潜在应用。
Zotero 插件