从持久发光纳米粒子与三价离子分离能量,用于比度温度传感
Tian-Qi Zhao1, Renagul Abdurahman1, Xue-Bo Yin2
1Xinjiang Key Laboratory of Novel Functional Materials Chemistry, College of Chemistry and Environmental Science, Kashi University Kashi Xinjiang 844000 China renagul111@aliyun.com.
RSC advances
|September 2, 2024
概括
这项研究引入了一种新型的甲酸盐 (MgGa2O4) 材料,添加了 (Cr3+) 和 (Pr3+) 离子,以增强近红外持续发光. 开发的材料展示了有效的比度温度传感能力.
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:
- 具有螺旋结构的甲酸 (MgGa2O4) 已知存在缺陷,并有可能通过离子注产生持久发光纳米粒子 (PLNPs).
- 三价 (Cr3+) 和三价 (Pr3+) 离子被探索用于调节宿主材料中的排放特性.
研究的目的:
- 将Cr3+和Pr3+离子引入MgGa2O4中,以实现和增强近红外 (NIR) 辐射.
- 为了研究合MgGa2O4复合物的发光特性和温度传感能力.
主要方法:
- 用Cr3+和Pr3+离子合的MgGa2O4的合成,特别是MgGa2O4:0.005Cr3+,0.003Pr3+ (MGCP).
- 在222nm激发下持久发光性质的表征.
- 对温度依赖的发光 (303-528 K) 和比度温度传感的分析.
主要成果:
- 最佳的MGCP复合材料在709 nm时表现出增强的NIR发射.
- 由于复杂的格子环境,在650nm和709nm观察到Cr3+排放的能量分裂.
- 基于发光强度比率,以高线性,灵敏度 (在303K时为4.18%) 和精度 (在528K时为2.62K) 实现了比度温度传感.
结论:
- MgGa2O4:Cr3+,Pr3+复合物显示出有希望的NIR持续发光.
- 能量分裂的Cr3+离子发射使得303-528K范围内的有效比度温度传感成为可能.
- 这项工作提出了一个可行的策略,用于设计温度传感器,使用离子合的持久发光材料.
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