Optical thermometry based fluorescence intensity ratio in Y2Mg2Al2Si2O12:Bi3+,Eu3+ phosphors
Optical thermometry based fluorescence intensity ratio in Y2Mg2Al2Si2O12:Bi3+,Eu3+ phosphors
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DOI：
10.1016/j.jallcom.2021.161010
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发表时间：
2021-12
影响因子：
6.2
通讯作者：
Xiusha Peng;Jing Chen-;Yihang Chen;Yuncheng Jiang;Rongfei Wei;WeiDong Zhou;Huijun Li;Hai Guo
中科院分区：
文献类型：
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作者：
Xiusha Peng;Jing Chen-;Yihang Chen;Yuncheng Jiang;Rongfei Wei;WeiDong Zhou;Huijun Li;Hai Guo
成功制备了一系列Y2Mg2Al2Si2O12:Bi3+,Eu3+荧光粉。分别用X射线衍射图、扫描电子显微镜和荧光光谱系统地研究了晶相、显微图像和光学性质。在 282 nm 激发下，对于 Y2Mg2Al2Si2O12:Bi3+ 荧光粉，观察到位于 319 nm 的宽带发射中心，该发射中心源自 3P1→1S0 跃迁。对于 Bi3+/Eu3+ 共掺杂样品，除了 Bi3+ 的 319 nm 发射之外，还观察到 Eu3+ 的一系列特征锐线。同时，能量传输效率（Bi3+→Eu3+）最高可达89.5%。根据不同温度下的发射光谱，样品基于荧光（Bi3+和Eu3+）强度比和热稳定性表现出优异的温度传感性能。 573 K时最大相对灵敏度Sr达到0.544%K−1。483 K时的发射强度保持在303 K时的95.5%。以上有意义的结果表明样品在温度测量领域可能具有一定的应用价值。
An array of Y2Mg2Al2Si2O12:Bi3+,Eu3+phosphors were successfully manufactured. The crystal phase, microscopic image and optical properties were systematically surveyed with X-ray diffraction patterns, scanning electron microscopy and fluorescence spectra, respectively. Under 282 nm excitation, for Y2Mg2Al2Si2O12:Bi3+phosphors, a broadband emission center located at 319 nm was observed, which is derived from the3P1→1S0transition. For Bi3+/Eu3+co-doped samples, besides the 319 nm emission of Bi3+, a range of characteristic sharp lines of Eu3+were observed. Meanwhile, the maximum efficiency of energy transfer (Bi3+→ Eu3+) can arrive to 89.5%. According to the emission spectra at different temperature, the samples present an excellent temperature sensing property based on fluorescence (from Bi3+and Eu3+) intensity ratio and thermal stability. The maximum relative sensitivitySrreaches to 0.544 %K−1at 573 K. The emission intensity at 483 K maintains 95.5% of that at 303 K. All above meaningful results indicate that the samples may have certain application value in the field of temperature measurement.