Fiber temperature sensor based on dual-wavelength emitting Mg0.388Al2.408O4: Mn2+/Mn4+ phosphors for real-time temperature monitoring

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Optical Materials Pub Date : 2024-09-19 DOI:10.1016/j.optmat.2024.116112

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引用次数: 0

Abstract

Single doped Mg_0.388Al₂O_3.408O₄ phosphor was prepared and multivalent Mn ion (Mn²⁺ and Mn⁴⁺) emission was achieved in a single host. The structure, morphology, and luminescence characteristics of Mn ions in Mg_0.388Al₂O_3.408O₄ were discussed in detail, especially the temperature dependent emission characteristics of Mn ions. Based on the fluorescence intensity ratio (FIR) of Mn²⁺ versus Mn⁴⁺ and the decay lifetime of Mn⁴⁺ emission as the temperature readout, a dual-mode optical temperature-sensing mechanism was proposed and studied in the temperature range of 293–473 K. The maximum relative sensitivities (S_r) are derived as 2.83 % K⁻¹ (at 373 K based on FIR) and 3.40 % K⁻¹ (at 473 K based on decay lifetime), respectively. The temperature sensing characteristics of Mg_0.388Al_2.408O₄: Mn²⁺/Mn⁴⁺ powders in a full fiber system were studied, which can provide thermal-sensitive emissions at dual-wavelengths for stable ratiometric temperature sensing with good precision and repeatability. The constructed all fiber temperature sensing system has been applied in the on-line monitoring of CPU temperature.

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基于双波长发射 Mg0.388Al2.408O4：Mn2+/Mn4+ 荧光粉的光纤温度传感器，用于实时温度监测

制备了单掺杂 Mg0.388Al2O3.408O4 荧光粉，并在单一宿主中实现了多价锰离子（Mn2+ 和 Mn4+）发射。详细讨论了 Mg0.388Al2O3.408O4 中锰离子的结构、形态和发光特性，尤其是锰离子随温度变化的发射特性。根据 Mn2+ 与 Mn4+ 的荧光强度比（FIR）和 Mn4+ 发射的衰减寿命作为温度读数，提出并研究了在 293-473 K 温度范围内的双模光学温度传感机制，得出最大相对灵敏度（Sr）分别为 2.83 % K-1（在 373 K 时基于 FIR）和 3.40 % K-1（在 473 K 时基于衰减寿命）。研究了 Mg0.388Al2.408O4：Mn2+/Mn4+ 粉末在全光纤系统中的温度传感特性，该系统可提供双波长热敏发射，用于稳定的比率温度传感，具有良好的精度和重复性。所构建的全光纤温度传感系统已应用于 CPU 温度的在线监测。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.