同时调整发光色,并通过负热膨胀实现光学温度传感器在Sc2(WO4)3:Tb/Eu光体
Biao Fu1, Haokun Yan1, Renfu Li1
1School of Chemistry and Chemical Engineering/Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000, P.R. China. jsliao1209@126.com.
Dalton transactions (Cambridge, England : 2003)
|December 12, 2023
概括
这项研究引入了用于先进的光学温度传感的新型 terbium/europium-doped scandium tungstate phosphors. 这些材料表现出独特的温度依赖的发光,使得精确的热检测.
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.
- 纳米技术 纳米技术
背景情况:
- 研究重点是用于发光应用的带有负热膨胀 (NTE) 的兰化物合材料.
- 在实现选择性反热火和管理NTE光物中的热火方面存在挑战.
- 三价兰化物 (Ln3+) 离子是开发先进发光材料的关键剂.
研究的目的:
- 为了探索Tb3+/Eu3+联合剂的Sc2(WO4) 3光剂用于选择性发光增强和温度传感.
- 在不同温度下研究Tb3+和Eu3+之间的能量传递机制.
- 开发一种基于发光强度比的高灵敏度光学温度计.
主要方法:
- 使用固态方法合成Tb3+/Eu3+联合剂的Sc2(WO4) 3.
- 在紫外线激发下对光发性质的表征.
- 对温度依赖的辐射光谱和发光强度比率的分析.
主要成果:
- 观察到从Eu3+红色排放的选择性增强和从Tb3+的热灭绿色排放.
- 该材料表现出热刺激的颜色发射,随着温度的增加,从黄色调整为红色.
- 非热合水平的发光强度比表明了光学温度计的潜力,在347K时达到2.94%K-1的相对灵敏度.
结论:
- 合成的Sc2(WO4)3:Tb3+/Eu3+光在下移发光中显示出不同的热反应.
- 该材料是高灵敏度光学温度传感应用的有希望的候选材料.
- 该研究解决了对具有受控热火和选择性排放调节的光剂的需求.
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