Mn2+/Tb3+-共掺杂 Ca2LaTaO6 荧光粉的反热淬火和多参数温度传感,Advanced Photonics Research

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Mn2+/Tb3+-共掺杂 Ca2LaTaO6 荧光粉的反热淬火和多参数温度传感
Advanced Photonics Research ( IF 3.7 ) Pub Date : 2023-04-14 , DOI: 10.1002/adpr.202300106
Yuqi Chen ₁ , Guixian Li ₁ , Yang Ding ₁ , Qinan Mao ₁ , Meijiao Liu ₂ , Chunhua Wang ₃ , Runtian Zheng ₄ , Bao-Lian Su ₄ , Jiasong Zhong ₁

Affiliation

发光测温在工业生产、环境检测、航空航天、医学等各个领域发挥着重要作用。然而，由于荧光粉的热猝灭效应，其精度的提高仍然具有很大的挑战性。在此，首次提出了热激活电子补偿Mn2+‐ 和 Tb3+‐共掺杂Ca2钽酸钽6荧光粉专为多参数温度传感而开发，具有可调谐的锰发射2+和 Tb 的反热猝灭发射3+，从而在高温下实现出色的精度。凭借 Mn 诱导的深电子陷阱态2+掺杂剂，深陷阱中的电子可以在高温下被热激活，可以补充衰减的Tb3+热猝灭引起的发射，从而产生反热猝灭现象。由于突出的发射特性，设计了发光强度比（LIR）读数和基于寿命的测温，提供最大的相对灵敏度S右3.603% 和 1.941% K−1，分别。还采用多参数温度传感和新颖的数据分析来进一步提高发光温度计的准确性。杰出的相对热灵敏度范围为 8.72% 至 16.11% K−1温度不确定度为 10−3都实现了。这些结果表明设计的 Ca2钽酸钽6:锰2+/铽3+荧光粉材料是一种有前途的热传感候选材料。

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Antithermal Quenching and Multiparametric Temperature Sensing from Mn2+/Tb3+‐Codoped Ca2LaTaO6 Phosphor

Luminescence thermometry plays significant roles in various fields including industrial production, environmental detection, aerospace, and medicine. However, its accuracy improvement remains highly challenging due to the thermal quenching effect of phosphors. Herein, for the first time, a thermal‐activated electron compensation Mn2+‐ and Tb3+‐codoped Ca2LaTaO6 phosphor is developed for multiparametric temperature sensing with tunable emission of Mn2+ and antithermal quenching emission of Tb3+, leading to excellent accuracy at high temperatures. By virtue of the deep electron trap states induced by Mn2+ dopant, the electrons in the deep trap can be thermally activated at high temperatures, which can replenish the attenuated Tb3+ emission caused by thermal quenching, thus bringing out the antithermal quenching phenomenon. On account of the prominent emission properties, the luminescence intensity ratio (LIR) readout and lifetime‐based thermometry are designed, providing a maximum relative sensitivity SR of 3.603% and 1.941% K−1, respectively. Multiparametric temperature sensing and novel data analysis are also employed to further improve the accuracy of the luminescence thermometer. The outstanding relative thermal sensitivity ranging from 8.72% to 16.11% K−1 and temperature uncertainty order of 10−3 are achieved. These results demonstrate that the designed Ca2LaTaO6:Mn2+/Tb3+ phosphor material is a promising thermal‐sensing candidate.

更新日期：2023-04-14

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