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Novel Optical Thermometry Strategy Based on Gd3+ and Defect-Related Luminescence of ZrO2:Gd3+ Nanoparticles
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-09-11 , DOI: 10.1021/acs.jpcc.0c05533 Jun Zhou 1 , Can Li 1 , Ruoshan Lei 1 , Huanping Wang 1 , Minghui Li 1 , Denghao Li 1 , Qinghua Yang 1 , Youjie Hua 1 , Shiqing Xu 1
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-09-11 , DOI: 10.1021/acs.jpcc.0c05533 Jun Zhou 1 , Can Li 1 , Ruoshan Lei 1 , Huanping Wang 1 , Minghui Li 1 , Denghao Li 1 , Qinghua Yang 1 , Youjie Hua 1 , Shiqing Xu 1
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To achieve high-temperature-sensing sensitivity, a new strategy of optical thermometry is designed based on the synergetic luminescence of the radiative emission of lanthanide (Ln) ions and defect-related luminescence in ZrO2:Gd3+ nanoparticles. By X-ray diffraction, Raman spectroscopy, electron paramagnetic resonance spectroscopy, X-ray photoelectron spectroscopy, diffuse reflectance spectroscopy, temperature-dependent photoluminescence (PL) spectroscopy, decay time measurements, and thermoluminescence study, we investigate the defect nature, the relationship between Gd3+ ions and defect centers, the PL property, and the thermometric performance. Under UV excitation, the broad emission band (λmax = 400 nm) observed is ascribed to the carbon impurities and oxygen vacancies, while the sharp emission peak (λmax = 315 nm) is from Gd3+ ions. Originating from their diverse thermal responses, the fluorescence intensity ratio of defect-related luminescence to Gd3+ emission displays excellent absolute sensitivity (Sa-max = 6.408 K–1), relative sensitivity (Sr-max = 3.452% K–1), and good signal discrimination (Δλmax = 85 nm), which are much higher than those reported previously for ratiometric thermal-sensing materials. This work may not only pave a way for boosting the sensing sensitivity of optical thermometers but also provide inspiration for extending the application of defect-related luminescent materials in thermal detection.
中文翻译：
基于Gd 3+和ZrO 2：Gd 3+纳米粒子的缺陷相关发光的新型光学测温策略
为了实现高温感应灵敏度，基于镧系元素（Ln）离子的辐射协同发光和ZrO 2：Gd 3+纳米粒子中的缺陷相关发光，设计了一种新的光学测温策略。通过X射线衍射，拉曼光谱，电子顺磁共振光谱，X射线光电子光谱，漫反射光谱，温度相关的光致发光（PL）光谱，衰减时间测量和热致发光研究，我们研究了缺陷性质，两者之间的关系Gd 3+离子和缺陷中心，PL特性和测温性能。在紫外线激发下，较宽的发射带（最大=约400 nm）是由于碳杂质和氧空位引起的，而尖锐的发射峰（λmax = 315 nm）来自Gd 3+离子。由于其不同的热响应，缺陷相关发光与Gd 3+发射的荧光强度比显示出极好的绝对灵敏度（S a-max = 6.408 K –1），相对灵敏度（S r-max = 3.452％K –1）），以及良好的信号识别（Δλ最大= 85 nm），比以前报道的比例热敏材料要高得多。这项工作不仅可以为提高光学温度计的感应灵敏度铺平道路，而且可以为扩展与缺陷相关的发光材料在热检测中的应用提供启发。
更新日期：2020-10-02
中文翻译：
基于Gd 3+和ZrO 2：Gd 3+纳米粒子的缺陷相关发光的新型光学测温策略
为了实现高温感应灵敏度，基于镧系元素（Ln）离子的辐射协同发光和ZrO 2：Gd 3+纳米粒子中的缺陷相关发光，设计了一种新的光学测温策略。通过X射线衍射，拉曼光谱，电子顺磁共振光谱，X射线光电子光谱，漫反射光谱，温度相关的光致发光（PL）光谱，衰减时间测量和热致发光研究，我们研究了缺陷性质，两者之间的关系Gd 3+离子和缺陷中心，PL特性和测温性能。在紫外线激发下，较宽的发射带（最大=约400 nm）是由于碳杂质和氧空位引起的，而尖锐的发射峰（λmax = 315 nm）来自Gd 3+离子。由于其不同的热响应，缺陷相关发光与Gd 3+发射的荧光强度比显示出极好的绝对灵敏度（S a-max = 6.408 K –1），相对灵敏度（S r-max = 3.452％K –1）），以及良好的信号识别（Δλ最大= 85 nm），比以前报道的比例热敏材料要高得多。这项工作不仅可以为提高光学温度计的感应灵敏度铺平道路，而且可以为扩展与缺陷相关的发光材料在热检测中的应用提供启发。
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