Pr3+-Activated LiTaO3 Crystal for a Dual-Mode and Dual-Channel Versatile Luminescence Thermometer

IF 3.4 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Crystal Growth & Design Pub Date : 2025-01-01 DOI:10.1021/acs.cgd.4c0151110.1021/acs.cgd.4c01511

Siwei Long, Zhihua Liu, Xin Yang* and Biao Wang*,

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Abstract

To cater to the requirements of integrated temperature sensing for diverse applications in optoelectronics and biomedicine, a dual-mode and dual-channel versatile thermometry strategy was proposed by utilizing Pr³⁺-activated luminescence. Stemming from population reallocation via the intervalence charge transfer state, different thermal responds of two sets of emissions originating from ³P₀ and ¹D₂ were observed in the important photoelectric material LiTaO₃. The fluorescence intensity ratio modes R₆₁₆/₅₁₀ and R₇₁₃/₇₆₄ offered visible and near-infrared spectral channels, respectively, for various sensing scenarios. The relatively sensitivities (S_R) were further improved with maximum values of 0.70 %K^–1 and 0.41%K^–1, respectively, via optimizing the choice of integrated spectral ranges. Moreover, the complementary lifetime mode excelled at higher temperatures with a maximum S_R of 0.42% K^–1. Therefore, Pr³⁺-activated LiTaO₃ enabled high-performance thermometry in wide temperature and spectral ranges, providing the future possibility of its integration within a variety of optoelectronic and biomedical devices.

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用于双模式双通道多功能发光温度计的Pr3+活化LiTaO3晶体

为了满足光电子和生物医学中多种应用对集成温度传感的需求，提出了一种利用Pr3+激活发光的双模式双通道通用测温策略。在重要的光电材料LiTaO3中，由于通过价间电荷转移态进行能级重新分配，3P0和1D2两组发射的热响应不同。荧光强度比模式R616/510和R713/764分别提供可见光和近红外光谱通道，适用于各种传感场景。通过优化综合光谱范围的选择，进一步提高了相对灵敏度（SR），最大灵敏度分别为0.70% K-1和0.41%K-1。此外，互补寿命模式在较高温度下表现优异，最大SR为0.42% K-1。因此，Pr3+激活的LiTaO3在宽温度和光谱范围内实现了高性能的测温，为其在各种光电和生物医学设备中的集成提供了未来的可能性。

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来源期刊

Crystal Growth & Design 化学-材料科学：综合

CiteScore

6.30

自引率

10.50%

发文量

650

审稿时长

1.9 months

期刊介绍： The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials. Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.