Achieving efficient neutron and gamma discrimination in a highly stable .sup.6./sup.Li-Loaded Cs.sub.3./sub.Cu.sub.2./sub.I.sub.5./sub. perovskite scintillator

0562003 - FZÚ 2023 RIV US eng J - Článek v odborném periodiku
Wang, Q. - Wang, C. - Wang, Z. - Sun, X. - Nikl, Martin - Ouyang, X. - Wu, Y.
Achieving efficient neutron and gamma discrimination in a highly stable ⁶Li-Loaded Cs₃Cu₂I₅ perovskite scintillator.
Journal of Physical Chemistry Letters. Roč. 13, č. 39 (2022), s. 9066-9071. ISSN 1948-7185
Grant CEP: GA MŠMT(CZ) EF16_019/0000760
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: Cs₃Cu₂I₅ * light yield * scintillator * Bridgman method
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 5.7, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1021/acs.jpclett.2c02643

Low-dimensional Cu(I) perovskite halides with efficient exciton emissions have recently emerged as promising scintillation materials for X-ray and gamma-ray detection applications. Here, we demonstrate the possibility of using zero-dimensional Cs3Cu2I5 for the sensitive detection of thermal neutrons and neutron−gamma discrimination enabled by Li doping. Single crystals of Cs3Cu2I5 doped with 95% enriched 6Li were grown by the Bridgman method. Cs3Cu2I5:6Li offers a compelling combination of high stability against moisture and oxygen, a decent energy resolution of 4.8% for 662 keV 137Cs gamma-rays, a high light yield of 30 000 photons/MeV for gamma-rays, and 96 000 photons/neutron for thermal neutron, and a good neutron−gamma pulse shape discrimination figure of merit of 2.27. Our discovery of 6Li-doped low-dimensional perovskite halides opens up a new horizon for stable and high-performance neutron−gamma scintillator design.
Trvalý link: https://hdl.handle.net/11104/0334435