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Quantification of upconversion photon and thermosensitive feedback in Er3+/Yb3+ doped fluorotellurite glasses
Journal of Luminescence ( IF 3.6 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.jlumin.2020.117184
Jiaxin Yang , Peijian Lin , Edwin Yue Bun Pun , Jinliang Yuan , Xin Zhao , Hai Lin

Abstract Multi-photon-excited green and red upconversion (UC) emissions have been quantified and adaptive temperature sensing performance has been investigated in Er3+/Yb3+ doped fluorotellurite (BZLFT) glasses under the excitation of 978 nm laser. The net emission photon numbers of 2H11/2 → 4I15/2, 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2 transition emissions are identified to be 83.2 × 1012, 753.2 × 1012 and 136.8 × 1012cps in 0.4 wt% Er2O3-0.4 wt% Yb2O3 co-doping case under the excitation power density of 7.82 W/mm2. The quantum yields (QYs) and luminous fluxes for visible UC emissions of Er3+ are identified as a positive dependency with pumping powers. When the excitation power increases to 983 mW, the QYs for detected 526 and 545 nm green, and 658 nm red emissions are up to 0.155 × 10−4, 1.405 × 10−4 and 0.255 × 10−4, respectively. Low phonon-energy Er3+/Yb3+ doped BZLFT glasses with intense luminous efficiency can work steadily at medium temperature range in view of its fast responses and high stability, moreover, a maximum sensitivity reaches 4.77 × 10−3 K−1 at 587.5 K, which indicates that the BZLFT glass material has a good thermal sensitivity. The macroscopic quantization for UC photon generation and the exploration of maximum sensitivity value from Er3+ in high transparent fluorotellurite glasses provide a reliable reference for developing optical temperature-sensing materials.

中文翻译:

Er3+/Yb3+掺杂氟碲酸盐玻璃中上转换光子和热敏反馈的量化

摘要 已对多光子激发的绿色和红色上转换 (UC) 发射进行了量化,并研究了在 978 nm 激光激发下 Er3+/Yb3+ 掺杂的氟碲酸盐 (BZLFT) 玻璃的自适应温度传感性能。2H11/2 → 4I15/2、4S3/2 → 4I15/2 和 4F9/2 → 4I15/2 跃迁发射的净发射光子数被确定为 83.2 × 1012、753.2 × 1012 和 136.8 × 1012cps 的重量百分比Er2O3-0.4 wt% Yb2O3 共掺杂情况下激发功率密度为 7.82 W/mm2。Er3+ 的可见光 UC 发射的量子产率 (QY) 和光通量被确定为与泵浦功率的正相关性。当激发功率增加到 983 mW 时,检测到的 526 和 545 nm 绿色以及 658 nm 红色发射的 QY 分别高达 0.155 × 10−4、1.405 × 10−4 和 0.255 × 10−4。具有高发光效率的低声子能 Er3+/Yb3+ 掺杂 BZLFT 玻璃由于其响应快、稳定性高,可在中温范围内稳定工作,并且在 587.5 K 时最大灵敏度达到 4.77 × 10-3 K-1,即表明 BZLFT 玻璃材料具有良好的热敏性。UC 光子产生的宏观量化和对高透明氟碲酸盐玻璃中 Er3+ 最大灵敏度值的探索为开发光学温度传感材料提供了可靠的参考。这表明 BZLFT 玻璃材料具有良好的热敏性。UC 光子产生的宏观量化和对高透明氟碲酸盐玻璃中 Er3+ 最大灵敏度值的探索为开发光学温度传感材料提供了可靠的参考。这表明 BZLFT 玻璃材料具有良好的热敏性。UC 光子产生的宏观量化和对高透明氟碲酸盐玻璃中 Er3+ 最大灵敏度值的探索为开发光学温度传感材料提供了可靠的参考。
更新日期:2020-06-01
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