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通过Er³⁺获得优异的上转换发光,用于深层组织的温度传感和防伪应用的自我敏感化

Guotao Xiang^1,2, Hongdou Chen¹, YuanYuan Yi¹

¹Department of Mathematics and Physics, Chongqing University of Posts and Telecommunications, 2 Chongwen Road, Chongqing 400065, China.

Inorganic chemistry

|April 3, 2025

概括

这项研究引入了Er³⁺-doped CaSc₂O₄作为一种用于升级转换 (UC) 发光的新材料. 它展示了敏感的光学温度计和先进的防伪应用的潜力.

科学领域:

材料科学材料科学材料科学
发光的阴影是什么意思
纳米技术纳米技术

背景情况:

高效上转换 (UC) 材料对于先进的应用至关重要.
在第二次近红外 (NIR) 生物窗口中发射的材料提供了增强的组织透.
(Er³⁺) 兴奋剂是一种实现UC发光的常见策略.

研究的目的:

为了研究Er³⁺在CaSc₂O₄矩阵中的上转换发光特性.
探索这种材料在光学温度计和防伪方面的潜力.
为了评估Er3+自我敏感化在1532nm激发下的性能.

主要方法:

合成和对CaSc₂O₄:Er³⁺的描述.
光学光谱分析上转换排放 (绿色,红色和NIR).
在双波长激发 (980和1532 nm) 下评估温度感度和变色发光.

主要成果:

在CaSc₂O₄中观察到强烈的绿色和红色UC辐射:Er³⁺.
有效的11/2 →15/2 NIR过渡,在生物组织中透深度至少为6毫米.
在多路径光学温度计中实现了高灵敏度.
在双波长激发下显示的可变色发光,适用于防伪.

结论:

CaSc₂O₄:Er³⁺具有优异的上转换特性,特别是在生物窗口内1532nm激发下.
该材料对敏感光学温度计和安全防伪技术的应用具有重大前景.
在CaSc₂O₄中进行Er³⁺自我敏感化是开发多功能发光材料的有效策略.

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