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1.浙江大学 物理系,浙江 杭州 310027
2.中国航发四川燃气涡轮研究院,四川 成都 610500
Published:2022-02,
Received:16 November 2021,
Revised:30 November 2021,
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HUI-LI ZHOU, FENG WU, ZHI-HONG ZHANG, et al. Upconversion Luminescence and Temperature Sensing Characteristics of Lu2O3∶Er3+/Yb3+ Phosphor. [J]. Chinese journal of luminescence, 2022, 43(2): 192-200.
HUI-LI ZHOU, FENG WU, ZHI-HONG ZHANG, et al. Upconversion Luminescence and Temperature Sensing Characteristics of Lu2O3∶Er3+/Yb3+ Phosphor. [J]. Chinese journal of luminescence, 2022, 43(2): 192-200. DOI: 10.37188/CJL.20210363.
采用CO
2
激光区熔法制备了Lu
2
O
3
∶0.5%Er
3+
/
x
%Yb
3+
(
x
=1
3
5)上转换荧光材料。X射线衍射结果表明,所制备的Lu
2
O
3
∶Er
3+
/Yb
3+
荧光材料具有纯Lu
2
O
3
晶相。在980 nm激光激发下,样品发出明亮的上转换荧光。光谱测试结果表明,样品上转换荧光强度和荧光中绿光与红光比例随Yb
3+
离子浓度改变,当Er
3+
和Yb
3+
离子浓度分别为0.5%和3%时,样品上转换荧光强度最强。通过荧光强度比(FIR)技术研究了样品Lu
2
O
3
∶0.5%Er
3+
/3%Yb
3+
在298~873 K温度范围内上转换荧光温度传感特性,在532.8 K时最大绝对灵敏度为0.006 0 K
-1
,在298 K时最大相对灵敏度为0.009 0 K
-1
。结果表明,Lu
2
O
3
∶Er
3+
/Yb
3+
荧光材料非常适合用于宽温度范围荧光温度传感。
Lu
2
O
3
∶0.5%Er
3+
/
x
%Yb
3+
(
x
=1
3
5) phosphors were prepared by CO
2
laser zone melting method. X-ray diffraction results showed that all the prepared Lu
2
O
3
∶Er
3+
/Yb
3+
phosphors have a pure Lu
2
O
3
crystal phase. Under the excitation of a 980 nm laser diode
the samples emit bright up-conversion luminescence(UCL). The luminescence intensity and the ratio of green band to red band in luminescence spectra change with Yb
3+
concentration. Besides
the UCL intensity reaches its maximum value when the doping concentrations of Er
3+
and Yb
3+
ions are 0.5% and 3%
respectively. The temperature sensing characteristics of Lu
2
O
3
∶0.5%Er
3+
/3%Yb
3+
were investigated using fluorescence intensity ratio(FIR) technique from 298 K to 873 K. The maximum absolute sensitivity is 0.006 0 K
-1
at 532.8 K
and the maximum relative sensitivity is 0.009 0 K
-1
at 298 K. The above results indicate that the Lu
2
O
3
∶Er
3+
/Yb
3+
phosphor is very suitable for wide-range temperature sensing.
Lu2O3∶Er3+/Yb3+;上转换发光荧光强度比(FIR)荧光温度传感CO2激光区熔法
Lu2O3∶Er3+/Yb3+upconversion luminescencefluorescence intensity ratio(FIR)fluorescence temperature sensingCO2 laser zone melting method
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