Yang Zaifa, Wang Zhide, Su Yi, Zhang Wenyue, Zheng Yu
College of Physics and Electronic Engineering, Qilu Normal University, Jinan 250200, China.
Molecules. 2025 Mar 31;30(7):1569. doi: 10.3390/molecules30071569.
In order to break through the limitations of the application of traditional temperature measurement technology, non-contact optical temperature sensing material with good sensitivity is one of the current research hotspots. Herein, a series of Dy and Mn co-doping MgGaSnO fluorescent materials were prepared successfully, and the crystal structure, phase purity, and morphology of the synthesized phosphors were comprehensively investigated, as well as their photoluminescence properties, energy transfer, and high-temperature thermal stability. The two pairs of independent thermally coupled energy levels of Dy ions and Mn ions in MgGaSnO are utilized to realize the dual-mode optical temperature detection with excellent performance. On the one hand, based on the different ionic energy level transitions of F→H and E→A responding differently to temperature, two emission bands of 577 nm and 668 nm were chosen to construct the fluorescence intensity ratio thermometry, and the maximum sensitivity of 1.82 %K was achieved at 473 K. On the other hand, based on the strong temperature dependence of the lifetime of Mn in MgGaSnO:0.06Dy,0.009Mn, fluorescence lifetime thermometry was constructed and a maximum sensitivity of 2.75 %K was achieved at 473 K. Finally, the MgGaSnO: 0.06Dy,0.009Mn sample realizes dual-mode optical temperature measurement with high sensitivity and a wide temperature detection range, indicating that the sample has promising applications in optical temperature measurement.
为突破传统温度测量技术应用的局限，具有良好灵敏度的非接触式光学温度传感材料是当前的研究热点之一。在此，成功制备了一系列Dy和Mn共掺杂的MgGaSnO荧光材料，并对合成磷光体的晶体结构、相纯度和形貌进行了全面研究，以及它们的光致发光特性、能量转移和高温热稳定性。利用MgGaSnO中Dy离子和Mn离子的两对独立热耦合能级实现了性能优异的双模式光学温度检测。一方面，基于F→H和E→A不同的离子能级跃迁对温度响应不同，选择577 nm和668 nm的两个发射带构建荧光强度比测温法，在473 K时实现了1.82 %K的最大灵敏度。另一方面，基于MgGaSnO:0.06Dy,0.009Mn中Mn寿命对温度的强烈依赖性，构建了荧光寿命测温法，在473 K时实现了2.75 %K的最大灵敏度。最后，MgGaSnO:0.06Dy,0.009Mn样品实现了高灵敏度和宽温度检测范围的双模式光学温度测量，表明该样品在光学温度测量方面具有广阔的应用前景。
