Improved photoluminescence and multi-mode optical thermometry of Er3+/Yb3+ co-doped (Ba,Sr)3Lu4O9 phosphors
Improved photoluminescence and multi-mode optical thermometry of Er3+/Yb3+ co-doped (Ba,Sr)3Lu4O9 phosphors
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DOI：
10.1016/j.ceramint.2021.10.080
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发表时间：
2021-10
影响因子：
5.2
通讯作者：
Jia-Xu Hu;Xing Zhang;Haihong Zheng;Fumin Lu;Xiusha Peng;Rongfei Wei;Fangfang Hu;Hai Guo
中科院分区：
文献类型：
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作者：
Jia-Xu Hu;Xing Zhang;Haihong Zheng;Fumin Lu;Xiusha Peng;Rongfei Wei;Fangfang Hu;Hai Guo
非接触式光学温度计由于其明显的优点，在科学研究和技术领域的应用受到了广泛的关注。在此基础上，成功地制备了Ba3-xSrxLu4O9(B3-xSxLO)：Er3+/Yb3+发光材料，并对其温敏性能进行了研究。通过建立Yb3+到Er3+的能量传递和调节局域晶格环境，在980 nm激光激发下，Er3+的上转换发光得到显著提高。这可以有效地提高信噪比，减少温度检测的误差。在此基础上，系统地探索了多模光学测温技术，包括2H11/2/4S3/2两个热耦合能级的荧光强度比(FIR)、基于2H11/2/4F9/2非热耦合体系的FIR和Er3+的4S3/2态的荧光寿命。制得的B3-xSxLO：Er~(3+)/Yb~(3+)样品具有温敏范围宽、信号分辨率高、灵敏度高、重复性好等优良的测温性能，在测温领域具有广阔的应用前景。
Contactless optical thermometers have attracted extensive attentions for applications in scientific research and technological fields due to their apparent advantages. Herein, a novel sequence of Ba3-xSrxLu4O9(B3-xSxLO):Er3+/Yb3+phosphors were successfully prepared to investigate the temperature sensing property. By establishing energy transfer from Yb3+to Er3+and regulating the local lattice environment, up-conversion luminescence of Er3+is dramatically improved when excited by 980 nm laser. This can effectively promote signal-noise ratio and reduce the errors in temperature detection. Furthermore, a multi-mode optical thermometry, which includes the fluorescence intensity ratio (FIR) from two thermally coupled levels of2H11/2/4S3/2, FIR based on non-thermally coupled system of2H11/2/4F9/2and fluorescence lifetime of4S3/2state of Er3+, was explored systematically. The fabricated samples exhibit the superior temperature measurement performances containing wide temperature-sensing range, superior signal discriminability, high sensitivity and favorable repeatability, indicative of the enormous utilization prospects of B3-xSxLO:Er3+/Yb3+for thermometry.