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arXiv 2203.16888cond-mat.mtrl-sci
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$_2$ W $_3$ O $_{12}$:Eu $^{3+}$荧光粉的热增强发光和温度敏感特性

Thermally enhanced photoluminescence and temperature sensing properties of Sc$_2$W$_3$O$_{12}$:Eu$^{3+}$ phosphors

Yude Niu, Yuzhen Wang, Kaiming Zhu, Wanggui Ye, Zhe Feng, Hui Liu, Xin Yi, Yihuan Wang, Xuanyi Yuan

摘要:

目前,稀土离子掺杂发光材料作为光学温度计的应用受到了广泛关注。基于两种发射对温度的不同响应,可以执行荧光强度比(FIR)技术并进一步估计灵敏度以评估光学测温性能。在本研究中,我们在负膨胀材料Sc $_2$ W $_3$ O $_{12}$:Eu $^{3+}$中引入不同浓度的Eu $^{3+}$离子,获得了373 ~ 548 K的热增强发光,并对其温度敏感特性进行了详细的研究。所有样品都表现出良好的热增强发光行为。在473 K时,Sc $_2$ W $_3$ O $_{12}$:6 mol% Eu $^{3+}$的发光强度达到初始强度的147.81%.随着Eu掺杂浓度的增加,样品的热猝灭电阻降低。基于Eu $^{3+}$离子的5D 0 - 7 F1(592 nm)和5D 0 - 7 F2(613 nm)跃迁的FIR技术证明了Sc $_2$ W $_3$ O $_{12}$:Eu $^{3+}$:6 mol% Eu $^{3+}$的最大相对温度灵敏度为3.063% K-1(298 K)。样品的灵敏度随Eu $^{3+}$浓度的增加而降低。由于Sc-$_2$-W-$_3$-O-$_{12}$:Eu $^{3+}$:Eu $^{3+}$具有热增强发光性能和良好的温度敏感性能,可用作光学温度计。

英文摘要:

Currently,lanthanide ions doped luminescence materials applying as optical thermometers have arose much concern. Basing on the different responses of two emissions to temperature, the fluorescence intensity ratio (FIR) technique can be executed and further estimate the sensitivities to assess the optical thermometry performances. In this study, we introduce different doping concentrations of Eu$^{3+}$ ions into negative expansion material Sc$_2$W$_3$O$_{12}$:Eu$^{3+}$, accessing to the thermal enhanced luminescence from 373 to 548 K, and investigate the temperature sensing properties in detail. All samples exhibit good thermally enhanced luminescence behavior. The emission intensity of Sc$_2$W$_3$O$_{12}$: 6 mol% Eu$^{3+}$ phosphors reaches at 147.81% of initial intensity at 473 K. As the Eu doping concentration increases, the resistance of the samples to thermal quenching decreases. The FIR technique based on the transitions 5D0-7F1 (592 nm) and 5D0-7F2 (613 nm) of Eu$^{3+}$ ions demonstrate a maximum relative temperature sensitivity of 3.063% K-1 at 298 K for Sc$_2$W$_3$O$_{12}$:Eu$^{3+}$: 6 mol% Eu$^{3+}$ phosphors. The sensitivity of sample decreases with the increase of Eu$^{3+}$ concentration. Benefiting from the thermal enhanced luminescence performance and good temperature sensing properties, the Sc$_2$W$_3$O$_{12}$:Eu$^{3+}$: Eu$^{3+}$ phosphors can be applies as optical thermometers.

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