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Two ratiometric thermometry methods based on the interplay between Eu2+ and Eu3+ and single Eu3+ emissions on OH−-free low-silica calcium aluminosilicate glass
Materials Research Bulletin ( IF 5.4 ) Pub Date : 2021-03-01 , DOI: 10.1016/j.materresbull.2020.111115
V.S. Zanuto , O.A. Capeloto , R.F. Muniz , M. Sandrini , J.H. Rohling , M.L. Baesso , L.A.O. Nunes

Abstract The constant demand to accurately measure the temperature sheds light on luminescent materials that have dependence on their thermodynamic quantities. Several materials have been applied as sensors to measure temperature for different applications, however, very few showed high precision and sensitivity. This work reports the Eu 2 + /Eu 3 + -doped low-silica calcium aluminosilicate glass as a potential candidate for high sensitive ratiometric thermometer. The glass was analyzed close to the physiological temperature range, between 288.15 – 333.15 K. Since this glassy matrix provides the presence of two europium valences, two different approaches are presented. The first takes into account the temperature dependence of 5 D 0 → 7 F 4 emission for two different excitation wavelengths, and the second one is based on the interplay between Eu 2 + and Eu 3 + emissions. Both ratiometric approaches presented high reproducibility and relative sensitivity values, from 1.2 to 1.6 %/K and from 0.75 to 0.95 %/K, for the first and second approach, respectively.

中文翻译:

基于 Eu2+ 和 Eu3+ 与单 Eu3+ 发射在无 OH− 低硅钙铝硅酸盐玻璃上的相互作用的两种比例测温方法

摘要 对精确测量温度的持续需求揭示了依赖热力学量的发光材料。几种材料已被用作传感器来测量不同应用的温度,但是,很少有材料表现出高精度和灵敏度。这项工作报告了 Eu 2 + /Eu 3 + 掺杂的低硅钙铝硅酸盐玻璃作为高灵敏度比例温度计的潜在候选物。在接近 288.15 – 333.15 K 的生理温度范围内对玻璃进行分析。由于这种玻璃状基质提供了两种铕化合价,因此提出了两种不同的方法。第一个考虑了 5 D 0 → 7 F 4 发射对两种不同激发波长的温度依赖性,第二个是基于 Eu 2 + 和 Eu 3 + 排放之间的相互作用。对于第一种方法和第二种方法,两种比率方法都具有较高的重现性和相对灵敏度值,分别为 1.2 至 1.6 %/K 和 0.75 至 0.95 %/K。
更新日期:2021-03-01
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