基于Cr3+-Ni2+发射的热鲁棒且强压力响应的近红外发光压力计
Thermally Robust and Strongly Pressure-Responsive NIR Luminescent Manometer Based on Cr3+-Ni2+ Emission
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- Southern Medical University（南方医科大学）
- Institute of Low Temperature and Structure Research Polish Academy of Sciences（波兰科学院低温结构研究所）
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中文总结 AI 辅助
本研究提出NaLu2Ga3Ge2O12:Cr3+, Ni2+作为近红外发光压力计，利用压力诱导的发射位移和强度调制实现高灵敏度测压，其绝对灵敏度达34 nm GPa-1，相对灵敏度达158% GPa-1，且热不变测压因子高达19,900 K GPa-1，为迄今最高值。
中文摘要 AI 辅助
对能够精确测定压力的高灵敏度发光压力计的需求日益增长，尤其是那些在近红外（NIR）光谱范围内工作的压力计，这促使人们不断寻找新型压力响应发光材料。在本工作中，我们介绍了NaLu2Ga3Ge2O12:Cr3+, Ni2+作为一种高灵敏度的近红外发光压力计，其中压力不仅诱导Cr3+和Ni2+发射带的显著光谱位移，还强烈调制它们的相对发光强度。值得注意的是，Ni2+的3T2(3F)->3A2(3F)发射带表现出创纪录的高绝对压力灵敏度SA = 34 nm GPa-1。此外，通过适当选择压力响应发射带内的窄光谱范围，开发了一种比率型近红外发光压力计，提供了最大相对压力灵敏度SR = 158% GPa-1。最重要的是，所提出的比率读数表现出热不变的测压因子（TIMF）为19,900 K GPa-1，据我们所知，这是迄今报道的发光压力计的最高值。超高压力灵敏度、近红外操作以及对热干扰的显著抵抗力的结合，确立了NaLu2Ga3Ge2O12:Cr3+, Ni2+作为一种非常有前景的发光压力传感器，可在同时存在温度变化的条件下进行可靠的压力测定。
英文摘要
The increasing demand for highly sensitive luminescent manometers capable of precise pressure determination, particularly those operating in the near-infrared (NIR) spectral range, motivates the continuous search for new pressure-responsive luminescent materials. In this work, we introduce NaLu2Ga3Ge2O12:Cr3+, Ni2+ as a highly sensitive NIR luminescent manometer in which pressure not only induces pronounced spectral shifts of the Cr3+ and Ni2+ emission bands but also strongly modulates their relative luminescence intensities. Remarkably, the 3T2(3F)->3A2(3F) emission band of Ni2+ exhibits a record-high absolute pressure sensitivity of SA = 34 nm GPa-1. Furthermore, by appropriately selecting narrow spectral ranges within the pressure-responsive emission bands, a ratiometric NIR luminescent manometer was developed, providing a maximum relative pressure sensitivity of SR = 158% GPa-1. Most importantly, the proposed ratiometric readout exhibits a thermal-invariance manometric factor (TIMF) of 19,900 K GPa-1, which, to the best of our knowledge, is the highest value reported to date for a luminescent manometer. The combination of exceptionally high-pressure sensitivity, NIR operation, and remarkable resistance to thermal interference establishes NaLu2Ga3Ge2O12:Cr3+, Ni2+ as a highly promising luminescent pressure sensor for reliable pressure determination under conditions involving simultaneous temperature variations.
