Design, simulation, elaboration and luminescence of Tb3+-doped Ba0.84Gd0.16F2.16 fluoroaluminosilicate scintillating glass ceramics
Design, simulation, elaboration and luminescence of Tb3+-doped Ba0.84Gd0.16F2.16 fluoroaluminosilicate scintillating glass ceramics
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DOI：
10.1016/j.jeurceramsoc.2021.05.064
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发表时间：
2021-05
影响因子：
5.7
通讯作者：
Sunyuezi Chen;Wenna Zhang;Liming Teng;Jing Chen-;Xinyuan Sun;Hai Guo;Xusheng Qiao
中科院分区：
文献类型：
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作者：
Sunyuezi Chen;Wenna Zhang;Liming Teng;Jing Chen-;Xinyuan Sun;Hai Guo;Xusheng Qiao
为了满足广泛应用的辐射探测材料的需要，人们对辐射探测材料进行了广泛的研究。然而，由于成本高、制造过程耗时长以及辐射发光不足等限制，传统的发光器件的实际应用受到限制。在此，设计了掺杂有Tb 3+的高密度前体玻璃，以有效地吸收X射线并产生绿色发射。采用分子动力学模拟方法对熔融过程中的相分离过程进行了模拟。然后，采用熔体淬冷技术和进一步热处理工艺制备了具有优异结构和光学性能的Tb 3+掺杂Ba0.84Gd0.16F2.16微晶玻璃。对它们的结构、光致发光（PL）和X射线激发发光（XEL）进行了详细的研究。气相色谱中PL的内量子效率为64%. XEL强度是Bi_4Ge_3O_（12）（BGO）商业闪烁体的192%。我们的研究结果表明，Tb ~（3+）GC在X射线检测中可能具有潜在的应用价值。Ba0.84Gd0.16F2.16
Extensive researches on scintillators have been executed to satisfy the excellent radiation detection materials in broad applications. However, practical application of conventional scintillators is limited due to the limitations of high cost, time-consuming fabrication process and insufficient radioluminescence. Herein, high density precursor glass doped with Tb3+was designed to absorb X-ray efficiently and produce green emission. Molecular dynamics simulation was used to simulate the phase separation process in melting process. Then, Tb3+-doped Ba0.84Gd0.16F2.16glass ceramics (GCs) with excellent structural and optical properties were elaborated by melt quenching technic and further heat treating. Their structural properties, photoluminescence (PL) and X-ray excited luminescence (XEL) were explored detailedly. The internal quantum efficiency of PL is 64 % in GCs. The XEL intensity is 192 % of that of Bi4Ge3O12(BGO) commercial scintillator. Our results suggest that Ba0.84Gd0.16F2.16:Tb3+GCs might have potential application in X-ray detection.