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通过Eu-Doped BaTiO中激发强度比率进行敏感发光温度测量₃

Zhifeng Xing¹, Hao Suo^1,2, Fengjun Chun¹

¹Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China.

ACS applied materials & interfaces

|March 7, 2024

概括

这项研究引入了一种新的光学温度计方法,使用欧添加剂的酸 (BTO) 粉末. 开发的激发强度比率 (EIR) 技术提供了可靠的非接触式温度传感,通过codoping提高了灵敏度.

科学领域:

材料科学材料科学材料科学
光学传感传感器是什么?
纳米技术纳米技术

背景情况:

光学比度温度计对于各种应用中的非接触式温度传感至关重要.
乙酸 (BTO) 材料由于其光学特性,为温度测量提供了潜力.

研究的目的:

开发一种新的光学比度温度测量技术,该技术的基础是以温度为依赖的Eu³⁺-doped BTO的吸收.
为了研究欧3+兴奋剂度对温度计性能的影响.
通过codoping策略来增强温度计的灵敏度.

主要方法:

制造含有Eu3+剂量的BTO粉末.
光发光和激发光谱分析Eu³⁺过渡 (⁷F₀ → ⁵L₆和 ⁵D₂).
计算激发强度比率 (EIR) 和相对灵敏度 (S_r) 作为温度和兴奋剂度的函数.
Eu³⁺/Ti³⁺ 编码,以优化性能.

主要成果:

建立了一种新的激发强度比率 (EIR) 温度计方法,使用Eu3+化BTO.
在303K的BTO:Eu3+ (0.5%) 达到4.89%K-1的最大相对灵敏度 (S_r).
确定了Eu³⁺在Ba²⁺和Ti⁴⁺位点的两占用,影响S_r.
通过Ti3+代,在303K时将S_r提升到6.42%K-1通过Ti3+代.

结论:

欧3+化BTO是一种可行的材料,用于光学比度温度计.
3+代有效地通过影响 Eu3+ 站点占用来提高温度感应灵敏度.
开发的方法对先进的工业和生物相关的温度传感应用有前途.

关键词:

两极性职业是两极性的职业.主体吸收的宿主吸收.兰他尼德兴奋剂的使用方法光学带移位的光学带移位.取决于地点的发光效应.

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