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首页> 外文期刊>RSC Advances >Structure and luminescence properties of multicolor phosphor Ba2La3(GeO4)3F:Tb3+,Eu3+
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Structure and luminescence properties of multicolor phosphor Ba2La3(GeO4)3F:Tb3+,Eu3+

机译：Ba2La3（GeO4）3F：Tb3 +，Eu3 +多色荧光粉的结构和发光性能

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摘要

A new kind of multicolor phosphor Ba _(2) La _(3) (GeO _(4) ) _(3) F:0.15Tb ~(3+) , x Eu ~(3+) (BLGOF:0.15Tb ~(3+) , x Eu ~(3+) ) has been acquired through the traditional high temperature solid phase synthesis method. The structural information of the phosphor was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Rietveld refinement. The optical properties of the phosphor have also been studied in detail, including its photoluminescence spectra (PL), photoluminescence excitation spectra (PLE), fluorescence decay curves, energy transfer mechanism and thermal quenching spectra. It has been found that the optimum concentration of Eu ~(3+) in BLGOF:0.15Tb ~(3+) , x Eu ~(3+) is 0.24 mol and the energy transfer mechanism from Tb ~(3+) to Eu ~(3+) in BLGOF is quadrupole–quadrupole. The color of BLGOF:0.15Tb ~(3+) , x Eu ~(3+) phosphors can be changed from green to yellow/orange to red. Some details of the energy transfer are reviewed and the effect of complex anion regulation on thermal stability has also been studied. All the properties are good and can contribute to the promotion from the laboratory to practical application for the phosphor.
机译：一种新型的多色荧光粉Ba _（2）La _（3）（GeO _（4））_（3）F：0.15Tb〜（3+），x Eu〜（3+）（BLGOF：0.15Tb〜 （3+），x Eu〜（3+））是通过传统的高温固相合成方法获得的。通过X射线衍射（XRD），扫描电子显微镜（SEM）和Rietveld精炼研究了磷光体的结构信息。还已经详细研究了磷光体的光学特性，包括其光致发光光谱（PL），光致发光激发光谱（PLE），荧光衰减曲线，能量转移机理和热猝灭光谱。发现BLGOF中Eu〜（3+）的最佳浓度为：0.15Tb〜（3+），x Eu〜（3+）为0.24 mol，并且能量从Tb〜（3+）转移到Eu BLGOF中的〜（3+）是四极-四极。 BLGOF：0.15Tb〜（3+），x Eu〜（3+）荧光粉的颜色可以从绿色变为黄色/从橙色变为红色。审查了能量转移的一些细节，还研究了复杂的阴离子调节对热稳定性的影响。所有特性都很好，并且可以促进荧光粉从实验室到实际应用的推广。

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