基于不同的策略,在广泛的温度范围内具有高灵敏度的光学温度感应光体
Songsong An1, Jia Zhang1, Zhenghe Hua1
1Physics Department and Jiangsu Key Laboratory of Modern Measurement Technology and Intelligence, Huaiyin Normal University, 111 West Chang Jiang Road, Huai'an 223300, China. zhangjianew@126.com.
Dalton transactions (Cambridge, England : 2003)
|July 7, 2023
概括
稀土离子合的光体对光学温度计有很大的前景. 这些与伊特尔-埃尔和伊特尔-图联合合的材料在传感应用中表现出温度依赖的发光.
科学领域:
- 材料科学 材料科学 材料科学
- 光学是什么?光学是什么?光学是什么?
- 固态化学 固态化学
背景情况:
- 稀土离子合发光材料具有独特的光学特性,使它们适合各种应用.
- 光学温度计需要具有温度依赖的发光特性的材料.
研究的目的:
- 为了合成和表征单相伊特-埃尔 (Yb3+-Er3+) 和伊特-图 (Yb3+-Tm3+) 联合合的兰酸盐 (La1.55SiO4.33) .
- 研究这些光体的上转换 (UC) 光发机制和光学温度传感行为.
主要方法:
- 六边形系统La1.55SiO4.33的合成与Yb3+-Er3+和Yb3+-Tm3+进行联合合.
- 在980nm激发下对上转换发光光谱的分析.
- 温度依赖的光谱测量以确定光强度比率 (FIR) 策略.
- 使用热合能级 (TCEL) 和非TCEL的传感器灵敏度的评估.
主要成果:
- 在521,553和659nm时观察到Er3+的特征排放,在474,790,648和685nm时观察到Tm3+的特征排放.
- 通过功率依赖的光谱来阐明向上转换的发光机制.
- 使用基于温度依赖光谱的FIR策略,证明了有效的光学温度传感.
- 与其他报告的发光材料相比,获得了更好的传感器灵敏度.
结论:
- 开发的Yb3+-Er3+和Yb3+-Tm3+联合合的La1.55SiO4.33光体显示出有希望的光学温度传感能力.
- 这些体适合制造光学温度计,因为它们具有独特的光谱特征和增强的传感器灵敏度.
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