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化盐合成的CaTa₄O₁₁:Er³⁺/Yb³⁺具有高级向上转换发光

Xuekai Wang¹, Yongze Cao¹, Yuanbing Mao²

¹Department of Physics, Dalian Maritime University, Dalian 116026, China.

Inorganic chemistry

|January 5, 2024

概括

化盐的合成产生高纯度的CaTa4O11:Er3+/Yb3+,具有优越的上转换发光 (UCL). 酸进一步提高了绿色UCL的强度,使它们成为温度传感应用的理想选择.

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:

层状酸盐对上升转换发光 (UCL) 是有前途的.
UCL的强度通常受到相位杂质和兴奋剂问题的限制.
优化合成对于提高UCL性能至关重要.

研究的目的:

通过化盐合成 (MSS) 合成单相CaTa4O11:Er3+/Yb3+.
将MSS准备的样本的UCL特性与传统固态反应 (SSR) 的样本进行比较.
为了增强UCL强度,并评估发光温度计的潜力.

主要方法:

溶盐合成 (MSS) 使用KCl作为反应介质.
传统的固态反应 (SSR) 进行比较.
酸处理 (AP) 处理以增强发光.
在980nm激光激发下,上转换发光特性的表征.

主要成果:

与SSR相比,MSS产生的高纯度,单相CaTa4O11:Er3+/Yb3+具有增强的UCL强度.
酸增加了绿色UCL强度的1.57倍.
在高功率密度下,MSS-AP样本的UCL强度是SSR-AP样本的3.72倍.
温度计的最大绝对灵敏度在501K时达到0.01316K-1.

结论:

MSS是一种有效的方法,用于制备高质量的CaTa4O11:Er3+/Yb3+.
合成的体显示出出色的纯绿色UCL.
这些光体因其发光特性而适用于温度传感应用.

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