LiYO2:Ho3+,Gd3+的UVB上升转换用于发光温度测量中的应用
Shanshan Zhao1, Benchun Li1, Tiantian Shen1
1Engineering Research Center of Optical Instrument and System, The Ministry of Education, Shanghai Key Laboratory of Modern Optical Systems, University of Shanghai for Science and Technology, Shanghai 200093, China. d.yu@usst.edu.cn.
Dalton transactions (Cambridge, England : 2003)
|September 18, 2023
概括
新型的紫外线 (UV) 上转换材料,特别是Ho3+/Gd3+联合合的LiYO光体,表现出温度依赖的紫外线发光. 这些材料对敏感的发光温度测量应用非常有前途.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 发光和光谱学 发光和光谱学
背景情况:
- 新型紫外线 (UV) 上转换材料的开发对于激光,光催化和温度计等应用至关重要.
- 霍3+和Gd3+离子以其发光特性而闻名,但它们与紫外线上转换材料的融合需要进一步研究.
- 发光温度计为温度测量提供一种非接触式方法,但需要具有温度敏感发光材料.
研究的目的:
- 为了合成和表征Ho3+/Gd3+联合化LiYO2上转化.
- 调查紫外线上升转换的发光特性和潜在的机制,包括能量转移.
- 探索这些材料在发光温度测量应用中的潜力.
主要方法:
- 通过传统的高温反应合成LiYO:Ho3+,Gd3+.
- 用蓝色激光 (∼445 nm) 激发激发,以诱导紫外线向上转换的发光.
- 对静态和动态光发光谱进行分析,以研究上升转换和能量转移.
- 对发光强度比作为温度 (353-673 K) 的函数进行测量.
主要成果:
- 从LiYO的Gd3+兴奋状态中观察到强烈的利紫外线B (UVB) 上转换发光:Ho3+,Gd3+.
- 系统地研究了Ho3+和Gd3+之间的两个光子吸收升级转换和能量传输过程.
- 根据博尔茨曼统计数据,UVB发光强度比表现出敏感的温度依赖.
- 该材料在广泛的温度范围 (353-673 K) 上表现出有效的发光温度计,具有良好的相对灵敏度.
结论:
- Ho3+/Gd3+联合合的LiYO2光体是有前途的UV升级材料.
- 这些材料为开发敏感的发光温度计提供了新的途径.
- 这项研究强调了Gd3+相关的紫外线发光对于先进的温度传感应用的潜力.
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