通过极简主义方法构建一个自我引用的NIR-II温度计,通过对协调的水分子进行能量调节
Jianhao Zheng1,2, Pengye Du1,2, Ran An1
1State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
ACS applied materials & interfaces
|January 3, 2025
概括
研究人员开发了新的第二近红外 (NIR-II) 发光晶体,用于先进的光温度计. 这些Yb3+/Nd3+-doped Cs2ScCl5·H2O晶体提供了简单的合成和改进的温度传感能力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 频谱学是一种光谱学.
背景情况:
- 光温度计提供了敏感的,非侵入性的温度测量.
- 金属化物矿呈现有前途的表现,但面临着诸如有限的光透和自光等挑战.
- 现有的方法通常依赖于可见光或第一近红外光,阻碍深层组织应用.
研究的目的:
- 为先进的光温度计合成新型第二近红外 (NIR-II) 发光晶体.
- 克服当前温度测量技术的局限性,特别是光线穿透性较差和自光.
- 开发一种具有高灵敏度的自参照比度温度计.
主要方法:
- 使用简单的"溶解干燥"方法合成了Yb3+/Nd3+的零维Cs2ScCl5·H2O晶体.
- 优化Yb3+/Nd3+的兴奋剂度达到15%/20%以获得最佳的光.
- 研究了Yb3+和Nd3+的取决于温度的发射强度比.
主要成果:
- 在15%的Yb3+和20%的Nd3+中实现了最佳的光性能.
- 由于高效的能量转移,观察到温度依赖的排放强度比.
- 证明了自引用的比度NIR-II发光温度计,其最大相对灵敏度为1.66%K-1在323K.
结论:
- 成功合成了NIR-II发光晶体,用于非接触式温度传感.
- 开发的晶体克服了基于可见/NIR-I温度计的局限性,提供了更好的透.
- 这项工作促进了高度灵敏和可靠的NIR-II发光温度计的开发.
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