Dr. ShinHaeng Cho Profile

Dr. ShinHaeng Cho

at Korea Univ

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Proceedings Article | 16 October 2024 Presentation + Paper

The characterization of a perovskite Cs3Cu2I5 scintillator for the gamma-ray detection

Chansun Park, Alima Melis, Shinhaeng Cho, Sangsu Kim, Jung-Yeol Yeom

Proceedings Volume 13151, 1315106 (2024) https://doi.org/10.1117/12.3027180

KEYWORDS: Crystals, Scintillators, Cesium, Gamma radiation, Perovskite, Scintillation, Transmittance, Spectroscopy, Photomultipliers, Metals

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Metal halide perovskite (HP) scintillation crystals have garnered significant interest due to their potential to enhance radiation detection efficiency across various applications. Their notable scintillation properties and competitive optical performances make them strong candidates for advanced radiation detectors. This study investigates gamma-ray detection using a perovskite Cs₃Cu₂I₅ scintillator grown via the inverse temperature crystallization method. Formic acid was used to prevent oxidation of the iodine and copper ions, enabling the production of samples of appropriate size for effective gamma-ray detection. The grown Cs₃Cu₂I₅ samples were subsequently cleaned with dimethyl sulfoxide and dimethylformamide to optimize their condition. A 10×10×6mm³ Cs₃Cu₂I₅ scintillator was covered with a Teflon tape and coupled to a photomultiplier tube (PMT) using an optical grease to measure the energy spectrum. The collected scintillation light on a digitizer was converted as an electrical signal, and analyzed on a PC. The energy resolution with an irradiation of ¹³⁷Cs source was 12.5% at 662keV. The maximum transmittance was recorded at 82.1%, as measured using a UV-Vis-NIR spectrometer. The findings of this study offer promising insights for future research and technological development in various fields.

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