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Development of (C6H5C2H4NH3)2Pb1-xCdxBr4 crystal scintillators with two-dimensional quantum-well structures
Journal of Luminescence ( IF 3.3 ) Pub Date : 2021-05-03 , DOI: 10.1016/j.jlumin.2021.118157
Daichi Onoda , Masaki Akatsuka , Naoki Kawano , Daisuke Nakauchi , Takumi Kato , Noriaki Kawaguchi , Takayuki Yanagida

We prepared (C6H5C2H4NH3)2Pb1-xCdxBr4 single crystals with four different values of x (x = 0.05, 0.1, 0.25, and 0.5) and investigated their photoluminescence (PL) and scintillation properties. All the samples showed the exciton luminescence peaking at 410 and 440 nm. The x = 0.05, 0.1, 0.25, and 0.5 samples exhibited the PL quantum yields of 20.2, 24.8, 29.7, and 27.8% including the typical errors of ±2%, respectively. The X-ray-induced scintillation peaks appeared at 440 nm for all the samples, which were attributed to the exciton luminescence from the inorganic layer. The x = 0.05, 0.1, 0.25, and 0.5 samples showed the scintillation light yields of 16000, 18000, 20000, and 19000 ph/MeV including the typical errors of ±10%, respectively. In the relationship between photoabsorption peak channels and gamma-ray energies, good linearities were confirmed from 22 to 662 keV for all the samples.



中文翻译:

具有二维量子阱结构的(C 6 H 5 C 2 H 4 NH 32 Pb 1- x Cd x Br 4晶体闪烁体的研制

我们制备了(C 6 H 5 C 2 H 4 NH 32 Pb 1- x Cd x Br 4单晶,具有四个不同的x值(x  = 0.05、0.1、0.25和0.5),并研究了它们的光致发光(PL)和闪烁特性。所有样品均显示出在410和440 nm处的激子发光峰。的x = 0.05、0.1、0.25和0.5的样品的PL量子产率分别为20.2、24.8、29.7和27.8%,其中典型误差分别为±2%。所有样品的X射线诱导的闪烁峰均出现在440nm处,这归因于来自无机层的激子发光。的X  = 0.05,0.1,0.25和0.5样品显示的16000,18000,20000,19000 PH / MeV的包括±10%的典型误差的闪烁光的产率,分别。在光吸收峰通道与伽马射线能量之间的关系中,对于所有样品,从22到662 keV都确认了良好的线性。

更新日期:2021-05-05
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