Ca2MgTeO6∶Bi3+,Mn4+材料的发光性能和温度探测OA北大核心CSTPCD
Luminescent Properties and Temperature Sensing of Ca2 MgTeO6∶Bi3+,Mn4+ Phosphors
通过高温固相法成功制备了一系列Ca2MgTeO6∶Bi3+,Mn4+荧光粉,对其微观结构、形貌、发光特性和温敏特性进行了表征.Ca2MgTeO6∶Bi3+,Mn4+荧光粉具有不同温度敏感性的双发射中心,分别来自于Bi3+离子 3P1 →1S0跃迁和Mn4+离子的 2Eg → 4A2g跃迁.由于Bi3+、Mn4+离子的发光强度随温度变化的规律不同,利用该特性进行测温研究,在 200～500 K范围内,该荧光粉的最大绝对灵敏度和相对灵敏度分别达到 0.027 K-1 和1.83%·K-1,并且观察到荧光粉的发光颜色由橙黄色逐渐变为紫红色.实验结果表明,Ca2MgTeO6∶Bi3+,Mn4+荧光粉作为光学测温材料在温度探测方面有一定的潜力.
A series of novel Ca2MgTeO6∶Bi3+,Mn4+ phosphors were successfully prepared using the high-tempera-ture solid-state method.The microstructure,morphology,luminescence properties,and temperature-sensitive prop-erties were characterized.The dual emission centers with different temperature sensitivity of Ca2MgTeO6∶Bi3+,Mn4+ phosphors are derived from the 3P1 →1S0 transition of Bi3+ ions and the 2Eg→4A2g transition of Mn4+ ions,respectively.Since the luminescence centers of Bi3+ and Mn4+ ions vary with temperature,the phosphor's maximum absolute sensi-tivity and relative sensitivity are 0.027 K-1 and 1.83%·K-1 in the 200-500 K range,respectively.At the same time,the luminescence color of Ca2MgTeO6∶Bi3+,Mn4+ changes from orange at 200 K to purple at 500 K.The experimental results show that Ca2MgTeO6∶Bi3+,Mn4+ phosphors can be used as optical materials for temperature detection.
祝冰心;朱肖;王磊;时秋峰;郭海洁;乔建伟;崔彩娥;黄平
太原理工大学 物理学院,山西 晋中 030600
物理学
光学测温荧光强度比Bi3+Mn4+温敏特性
optical temperature measurementfluorescence intensity ratioBi3+Mn4+thermo-responsive charac-teristics
《发光学报》 2024 (004)
579-590 / 12
国家自然科学基金(12204344,52102169);山西省自然科学基金(20210302123127);山西省留学基金委(2022-075);中国科协青年人才托举工程(YESS20200053)Supported by National Natural Science Foundation of China(12204344,52102169);Natural Science Foundation of Shanxi Province(20210302123127);China Scholarship Council of Shanxi Province(2022-075);Young Elite Scientists Sponsorship Program by China Association for Science and Technology(YESS20200053)
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