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通过同步调E和T2发射,扩大Cr3+的光学温度传感范围

Jiaqi Ou¹, Shuangqiang Fang¹, Qiangqiang Zhu¹

¹College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China. fsq1025@163.com.

Physical chemistry chemical physics : PCCP

|June 14, 2023

概括

研究人员开发了一种新方法,以扩大 (Cr3+) 化的温度传感范围. 与 (Al3+) 合金扩大了发光强度比 (LIR) 温度计的测量范围.

科学领域:

材料科学材料科学材料科学
固态化学固态化学
发光的光度是非常的低.

背景情况:

(Cr³⁺) 化光材料是使用发光强度比 (LIR) 技术的敏感温度传感器.
目前的LIR温度计由于严格的博尔兹曼分布而具有有限的温度测量范围.
扩大这些传感器的温度范围对于更广泛的应用至关重要.

研究的目的:

开发一种策略,扩大Cr3+化的温度传感范围.
研究Al3+合金对SrGa12-xAlxO19Cr3+的发光性能的影响.
为了实现能量水平的同步调整,以增强温度传感.

主要方法:

通过Al3+合金策略合成SrGa_12-xAl_xO₁₉:0.5%Cr³⁺ (x = 0, 2, 4, 6) 固体溶液.
合成的的特征.
分析发光特性和温度传感性能.

主要成果:

Al3+的引入调节了[Ga/AlO6]八面体的晶体场和对称性.
实现了²E和⁴T₂能量水平的同步调,扩大了温度响应.
SrGa₆Al₆O₁₉:0.5%Cr³⁺显示出一个扩展的温度测量范围从130K到423K.
获得了高灵敏度参数 (S_a = 0.0066 K^-1,S_r = 1% K^-1 在130 K) 的结果.

结论:

合金是一种有效的策略,可以扩大过渡金属合的温度传感范围.
开发的体为LIR模式温度计提供了更广泛的操作温度范围.
这项工作为设计先进的温度传感器提供了可行的方法.

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