Crystal Growth and X-Ray Detection Performance of 0D Cs3Cu2Br5 Single Crystal Perovskite

Abstract

Abstract: Metal halides low-dimensional perovskites have highly efficient luminescent properties and shown great potential as scintillators for radiation detection applications. Herein,single crystal of all-inorganic zero-dimensional Cs₃Cu₂Br₅ was grown by the Bridgman technique. The optical absorption, photoluminescence emission and excitation, time-resolved photoluminescence, and X-ray detection performance of Cs₃Cu₂Br₅ were measured. The Cs₃Cu₂Br₅ crystallized into orthorhombic system with a space group of Pnma. Under the excitation of X-ray, Cs₃Cu₂Br₅ crystal has a broad emission peaking at about 467 nm originated from self-trapped exciton emission. The steady state light yield of Cs₃Cu₂Br₅ is about 4 000 ph./MeV and its afterglow performance is comparable to that of BGO crystal.

Key words: zero-dimensional perovskite, scintillator, Cs₃Cu₂Br₅ single crystal, Bridgman method, X-ray detection, self-trapped exciton

CLC Number:

WANG Qian, WANG Jingkang, CHENG Shuangliang, REN Guohao, ZHU Xingwen, WU Yuntao. Crystal Growth and X-Ray Detection Performance of 0D Cs₃Cu₂Br₅ Single Crystal Perovskite[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(10): 1919-1924.

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Crystal Growth and X-Ray Detection Performance of 0D Cs₃Cu₂Br₅ Single Crystal Perovskite

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