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在La₂Ce₂O₇:Ho³⁺ Yb³⁺ 粉末的光学温度传感性能

Jiameng Chao¹, Hui Lin¹, Dechao Yu¹

¹Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China.

Materials (Basel, Switzerland)

|April 13, 2024

概括

与和离子联合合的氧化粉具有强烈的上转换发光. 这些材料显示出开发先进的远程温度传感器的潜力.

科学领域:

材料科学材料科学材料科学
发光的光度是非常的低.
固态化学固态化学

背景情况:

兰坦氧化 (La2Ce2O7) 是用于发光应用的有希望的宿主材料.
与霍尔 (Ho3+) 和 (Yb3+) 等稀土离子联合剂可以诱导上转换发光.
开发高效的温度传感器对于各种技术应用至关重要.

研究的目的:

为了合成和描述由Ho3+和Yb3+联合激活的La2Ce2O7粉末.
为了研究合成材料的上转换发光特性.
为了评估这些联合剂粉末的温度传感性能.

主要方法:

用于粉末合成的高温固态反应.
结晶结构和兴奋剂部位的表征.
光学光谱 (980nm激光激发) 用于分析上转换辐射.
温度依赖的发光测量以评估传感能力.

主要成果:

Ho3+和Yb3+离子成功地替代了La2Ce2O7网格中的La3+位点.
在980nm激光激发后观察到强烈的绿色 (547nm) 和红色 (661nm) 上转换辐射.
确定了最大发光强度的最佳兴奋剂度 (0.5%Ho3+和14%Yb3+).
该材料的温度传感能力在303-483K范围内,最大相对灵敏度为0.0129K-1在483K.

结论:

合成的La2Ce2O7:Ho3+,Yb3+粉末表现出高效的上转换发光.
该材料显示出作为光学遥控温度传感器的候选材料的巨大潜力.

关键词:

转移能量转移能量是什么?通过光学温度传感器传感温度.焦化的结构是火化.上转换时的排放排放量

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