Cs3Cu2Br5和CsCu2Br3单晶在闪烁体中的冷却结晶生长

IF 2.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

CrystEngComm Pub Date : 2025-03-26 DOI:10.1039/D5CE00109A

Benlan Zeng, Yongning Liu, Sirui Bao, Chencai Wang, Run Xu, Jinkun Liu and Yan Zhu

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引用次数: 0

摘要

近年来，卤化铜钙钛矿材料因其优异的性能在辐射探测领域得到了广泛的研究。然而，对溴化铜钙钛矿Cs3Cu2Br5和CsCu2Br3单晶的研究却很少。本研究通过调整CsBr与cur的比例，采用冷却结晶的方法制备了Cs3Cu2Br5和CsCu2Br3单晶。制备的Cs3Cu2Br5单晶具有较大的Stokes位移，在456nm处有蓝色发射，在137Cs源照射下，产光率为6384光子/ MeV，能量分辨率为17.5%@662 keV。

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The growth of Cs3Cu2Br5 and CsCu2Br3 single crystals by cooling crystallization for scintillator application†

Copper halide perovskite materials have been studied extensively for use in radiation detection in recent years because of their excellent properties. However, there are few research studies on copper bromide perovskite Cs₃Cu₂Br₅ and CsCu₂Br₃ single crystals. In this study, Cs₃Cu₂Br₅ and CsCu₂Br₃ single crystals were prepared by a cooling crystallization method by adjusting the ratio of CsBr to CuBr. The prepared Cs₃Cu₂Br₅ single crystals have a large Stokes shift and exhibit blue emission at 456 nm, with a light yield of 6384 photons per MeV and an energy resolution of 17.5%@662 keV irradiated with a ¹³⁷Cs source.