越近越好：Tb3+、Eu3+掺杂金属有机框架中RGB测温性能的工程化设计

中文摘要 AI 辅助

利用磷光材料光谱性质随温度变化进行温度传感的发光测温技术的有效性已被广泛证实。然而，从实际应用角度看，监测发射光颜色的温度诱导变化相比传统光谱分析提供了一种更为直接和用户友好的替代方案。在此背景下，建立发射颜色热演化与磷光体结构之间的明确关系，对于视觉发光温度计的合理设计至关重要。在本工作中，我们研究了Tb3+、Eu3+共掺杂金属有机框架（MOFs）中温度依赖的发射颜色与结构特征之间的关联，特别关注其用于无滤光片、基于相机的热传感的潜力。所得结果表明，在所研究的材料系列中，减小Eu3+和Tb3+离子之间的离子间距会增加能量转移的概率，从而增强基于蓝光和红光通道记录的发光强度比值的相机读数热灵敏度。这些发现建立了发光材料结构特征、底层能量转移过程及其测温性能之间的直接关系。更广泛地说，本研究为具有预定传感特性的视觉发光温度计的合理设计提供了基础，开辟了结构引导优化无滤光片、基于相机的热传感平台的途径。

英文摘要

The effectiveness of luminescence thermometry, which exploits temperature-induced changes in the spectroscopic properties of phosphor materials for temperature sensing, has been extensively demonstrated. However, from a practical perspective, monitoring temperature-induced variations in the color of the emitted light offers a considerably more straightforward and user-friendly alternative to conventional spectral analysis. In this context, establishing a clear relationship between the thermal evolution of the emission color and the structure of the phosphor is essential for the rational design of visual luminescence thermometers. In this work, we investigate the correlation between the temperature-dependent emission color and the structural characteristics of Tb3+, Eu3+-co-doped metal-organic frameworks (MOFs), with particular emphasis on their potential for filter-free, camera-based thermal sensing. The obtained results demonstrate that, within the investigated series of materials, decreasing the interionic distance between Eu3+ and Tb3+ ions increases the probability of energy transfer and consequently enhances the thermal sensitivity of the camera-based readout derived from the ratio of luminescence intensities recorded in the blue and red channels. These findings establish a direct relationship between the structural characteristics of the luminescent material, the underlying energy-transfer processes, and its thermometric performance. More broadly, this study provides a foundation for the rational design of visual luminescence thermometers with predefined sensing characteristics, opening a pathway toward structure-guided optimization of filter-free, camera-based thermal sensing platforms.

发表机构

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences（波兰科学院低温与结构研究所）
• Institute of Materials Science, Vietnam Academy of Science and Technology（越南科学技术院材料科学研究所）

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