在YOF:Yb,Ho粉末的上转换和温度传感行为
N A M Saeed1, H C Swart1, E Coetsee1
1Department of Physics, University of the Free State, Bloemfontein, South Africa.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|November 16, 2025
概括
氧化物添加了伊特尔和霍尔,表现出温度传感上升转换排放. 这种材料在温度变化时显示可调节的光辐射,证明了其用于准确的热传感应用的潜力.
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的.
- 纳米技术纳米技术
背景情况:
- 上转换 (UC) 材料可以将低能光子转换为高能光子.
- 由于其独特的排放特性,兰化物合材料对光学温度计具有前景.
- 氧化物 (YOF) 提供了一个强大的宿主矩阵,用于用稀土离子进行兴奋剂.
研究的目的:
- 研究YOF与伊特尔 (Yb3+) 和霍尔 (Ho3+) 联合合的上转换排放和温度传感能力.
- 探索Yb3+度对合成的YOF材料的光学特性和发光的影响.
- 评估这些材料在非接触温度计应用中的潜力.
主要方法:
- 通过热解法合成YOF:Yb3+,Ho3+粉末.
- 使用像X射线衍射 (XRD) 和光谱等技术进行结构,形态和光学表征.
- 取决于温度的上转换发光度测量以确定灵敏度参数.
主要成果:
- 通过结构分析证实了面 YOF 阶段形成.
- 含有7mol%Yb3+的样本呈现出最高的颜色纯度和明显的Ho3+绿色UC辐射.
- 取决于温度的UC发射显示可调节的光线从绿色到近白色随着温度的增加.
- 在303K时,最大绝对灵敏度为0.17K-1和1.3%K-1的相对灵敏度.
结论:
- YOF:Yb3+,Ho3+材料表现出有效的上转换发光.
- 可调节的发射和可量化的灵敏度突显了它们适用于光学温度传感的适用性.
- 这些发现支持基于YOF宿主开发先进的发光温度计.
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