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高灵敏度发光温度传感器:MFX:1%Sm²⁺ (M = Sr,Ba,X = Cl,Br) 这种传感器可以使用

Lizhi Cui¹, Zhijie Dong¹, Dechao Yu²

¹National and Local Joint Engineering Laboratory for Optical Conversion Materials and Technology of National Development and Reform Commission, School of Materials and Energy, Lanzhou University, Lanzhou, 730000, China.

Science advances

|August 14, 2024

概括

这项研究引入了一种新的以化物为基础的温度计,在各种化物宿主中使用离子 (Sm2+). 它在延伸范围 (350800 K) 上提供准确的远程温度传感,非常适合高温应用.

科学领域:

材料科学材料科学材料科学
频谱学是一种光谱学.
固态化学固态化学

背景情况:

兰化物发光对于远程温度传感至关重要.
目前的发光强度比率方法具有有限的温度范围.
离子 (Sm2+) 提供了由于多个激发状态而具有更广泛的温度传感潜力.

研究的目的:

在Ba (Sr) FBr (Cl) 主体中使用Sm²⁺开发了一种多功能发光温度计.
为了扩大发光温度计的温度范围.
分析传感性能,并针对特定温度范围进行优化.

主要方法:

合成和表征Sm²⁺-doped BaFBr,BaFCl,SrFBr,和SrFCl. 这些物质的合成和表征.
发光光谱学用于研究辐射特性.
对温度依赖的发光强度,寿命和热合方案的分析.
研究度,宿主和博尔兹曼平衡效应.

主要成果:

在Ba (Sr) FBr (Cl) 中的Sm2+表现出强烈的吸收和扩展的温度传感范围 (350800 K).
多个热合的能量水平 (D1 - D5和4f - D5d) 能够实现广泛的传感.
主体材料和Sm2+度影响传感性能.
4f⁵5d¹-⁵D₀的能量差距可以调整为特定的温度范围.

结论:

基于Sm2+的发光温度计为远程温度监测提供了多功能和有效的解决方案.
开发的温度计适用于需要传感温度高达500°C的应用.
这项工作推进了用于具有挑战性的环境的高性能发光温度计的开发.

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