在Ho3+,Yb3+-codoped Bi2WO6的上转换发光和温度传感性能方面,它具有非常高的性能
Mengliang Jiang1,2, Linxiang Wang1,2, Munire Maimaiti1,2
1School of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi, Xinjiang 830054, China. 1793737924@qq.com.
Dalton transactions (Cambridge, England : 2003)
|January 15, 2024
概括
这项研究开发了与holmium (Ho3+) 和 ytterbium (Yb3+) 合 bismuth tungstate (Bi2WO6) 材料,用于上转换发光. 这些材料表现出有前途的温度传感能力,在近红外激发下可调色色发射.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 发光的光度是非常的低.
背景情况:
- 上转换发光材料对于需要将低能光子转换为高能光子的应用至关重要.
- 石酸 (Bi2WO6) 由于其独特的结构和光学特性,是用于兴奋剂的有希望的宿主材料.
- 像荷尔 (Ho3+) 和伊特尔 (Yb3+) 这样的兰化离子被广泛用于上转换系统中的激活剂和敏感剂.
研究的目的:
- 为了合成和描述Ho3+和Yb3+联合合的Bi2WO6上转换发光材料.
- 研究合成材料的结构,形态和发光特性.
- 在近红外激发下评估Ho3+/Yb3+:Bi2WO6系统的温度传感性能.
主要方法:
- 使用高温固体相合成方法来制备化材料.
- 使用X射线衍射 (XRD) 来分析晶体结构.
- 扫描电子显微镜 (SEM) 与能量分散式X射线光谱 (EDS) 用于形态和元素分析.
- 在980nm激发下记录了上转换发光光谱,以研究发射特征和温度传感.
主要成果:
- 在 Ho3+ 和 Yb3+ 兴奋剂后,Bi2WO6 的正交晶体结构保持不变.
- 3%Ho3+,10%Yb3+:Bi2WO6样本在980nm激发下表现出强烈的Ho3+发射,源于两个光子的吸收.
- 该材料显示了温度依赖的发光,温度从298K增加到573K时可调整颜色坐标从绿色到红色.
- 对于非热合的能量水平,最大绝对温度灵敏度 (Sa) 为51.02%K-1和相对温度灵敏度 (Sr) 为1.85%K-1得到实现.
结论:
- Ho3+和Yb3+联合合的Bi2WO6材料可以通过固相方法有效合成.
- 合成的材料具有出色的上转换发光性能,并具有显著的温度传感能力.
- 可调色色辐射和高温敏感性使这些材料成为光学温度计和温度传感应用的潜在候选者.
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