Yang Zaifa
College of Physics and Electronic Engineering, Qilu Normal University, Jinan 250200, China.
Molecules. 2025 Apr 27;30(9):1945. doi: 10.3390/molecules30091945.
In recent years, rare earth ion and transition metal ion co-doped fluorescent materials have attracted a lot of attention in the fields of WLEDs and optical temperature sensing. In this study, I successfully prepared the dual-emission MgGaSnO:Eu,Mn red phosphors and the XRD patterns and refinement results show that the prepared phosphors belong to the Fd-3m space group. The energy transfer process between Eu and Mn was systematically investigated by emission spectra and decay curves of MgGaSnO:0.12Eu,yMn (0.002 ≤ y ≤ 0.012) phosphors and the maximum value of transfer efficiency can reach 71.2%. Due to the weak thermal quenching effect of Eu, its emission provides a stable reference for the rapid thermal quenching of the Mn emission peak, thereby achieving good temperature measurement performance. The relative thermometric sensitivities of the fluorescence intensity ratio and fluorescence lifetime methods reached a maximum value of 2.53% K at 448 K and a maximum value of 3.38% K at 473 K. In addition, the prepared WLEDs utilizing MgGaSnO:0.12Eu phosphor have a high color rendering index of 82.5 and correlated color temperature of 6170 K. The electroluminescence spectrum of the synthesized red LED device by MgGaSnO:0.009Mn phosphor highly overlaps with the absorption range of the phytochrome P and thus can effectively promote plant growth. Therefore, the MgGaSnO:Eu,Mn phosphors have good application prospects in WLEDs, temperature sensing, and plant growth illumination.
近年来，稀土离子和过渡金属离子共掺杂荧光材料在白光发光二极管（WLEDs）和光学温度传感领域引起了广泛关注。在本研究中，我成功制备了双发射MgGaSnO:Eu,Mn红色荧光粉，XRD图谱和精修结果表明所制备的荧光粉属于Fd-3m空间群。通过MgGaSnO:0.12Eu,yMn（0.002≤y≤0.012）荧光粉的发射光谱和衰减曲线系统研究了Eu和Mn之间的能量转移过程，转移效率最大值可达71.2%。由于Eu的热猝灭效应较弱，其发射为Mn发射峰的快速热猝灭提供了稳定的参考，从而实现了良好的温度测量性能。荧光强度比和荧光寿命方法的相对测温灵敏度在448 K时达到最大值2.53% K，在473 K时达到最大值3.38% K。此外，利用MgGaSnO:0.12Eu荧光粉制备的WLEDs具有82.5的高显色指数和6170 K的相关色温。由MgGaSnO:0.009Mn荧光粉合成的红色LED器件的电致发光光谱与植物色素P的吸收范围高度重叠，因此可以有效促进植物生长。因此，MgGaSnO:Eu,Mn荧光粉在WLEDs、温度传感和植物生长照明方面具有良好的应用前景。
