首页|Ca2MgTeO6∶Bi3+,Mn4+材料的发光性能和温度探测

Ca2MgTeO6∶Bi3+,Mn4+材料的发光性能和温度探测

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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.
Luminescent Properties and Temperature Sensing of Ca2 MgTeO6∶Bi3+,Mn4+ Phosphors
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.

optical temperature measurementfluorescence intensity ratioBi3+Mn4+thermo-responsive charac-teristics

祝冰心、朱肖、王磊、时秋峰、郭海洁、乔建伟、崔彩娥、黄平

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太原理工大学 物理学院,山西 晋中 030600

光学测温 荧光强度比 Bi3+ Mn4+ 温敏特性

国家自然科学基金国家自然科学基金山西省自然科学基金山西省留学基金委中国科协青年人才托举工程

1220434452102169202103021231272022-075YESS20200053

2024

发光学报
中国物理学会发光分会,中国科学院长春光学精密机械与物理研究所

发光学报

CSTPCD北大核心
影响因子:1.301
ISSN:1000-7032
年,卷(期):2024.45(4)
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