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Updated: May 1, 2026

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Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
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性酸盐与发射NIR的RE (Nd3+和Yb3+) 离子进行合,用于温度计应用
Rahul Pali1, Mohammad Ziyauddin Khan1, Aastha Sahu2
1Department of Physics, Dr. C. V. Raman University, Kota, Bilaspur, Chhattisgarh, India.
Journal of fluorescence
|July 2, 2024
概括
这项研究用sol-gel方法合成了BaSrSiO4联合合的Yb3+和Nd3+纳米. 这些材料显示出温度测量应用的潜力,达到2.13%K-1的灵敏度.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 纳米技术 纳米技术
背景情况:
- 石酸 (BaSrSiO4) 是用于发光应用的有希望的宿主材料.
- 稀土离子兴奋剂,特别是与 (Yb3+) 和 (Nd3+) 的兴奋剂,可以定制光学特性.
- 纳米提供了增强的性能,因为它们的高表面积与体积比.
研究的目的:
- 为了合成和描述与Yb3+和Nd3+纳米合剂配合的BaSrSiO4.
- 为了研究Yb3+和Nd3+离子之间的能量传递机制.
- 为了评估这些纳米的温度测量应用的潜力.
主要方法:
- 用于纳米制剂的Sol-gel合成.
- 射线衍射 (XRD) 和扫描电子显微镜 (SEM) 用于结构和形态分析.
- 福利埃变换红外 (FTIR) 和拉曼光谱用于振动分析.
- 光发光 (PL) 光谱学用于研究光学转换和能量转移.
- 聚子灭寿命 (PAL) 光谱法用于分析缺陷结构.
- 光强度比 (FIR) 技术用于温度计灵敏度评估.
主要成果:
- 纯的BaSrSiO4联合合的Yb3+和Nd3+纳米被成功合成.
- 观察到酸盐形成和Nd3+和Yb3+离子之间的能量转移的证据.
- 分析揭示了各种各样的缺陷结构 (空缺,集群),具有不同的兴奋剂度.
- 在303-333 K的温度范围内,达到2.13%K-1的温度计灵敏度.
结论:
- 合成的BaSrSiO4:Yb3+,Nd3+纳米具有温度计所需的特性.
- sol-gel方法是有效的生产这些化纳米具有受控的属性.
- 通过兴奋剂度的缺陷工程在优化温度性能方面发挥着至关重要的作用.
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