TY - JOUR
T1 - Structure-Function Integration in 2D Hybrid Perovskite for Fast Neutron and Gamma Ray Discrimination
AU - Wang, Yingming
AU - Xu, Lingyan
AU - Liu, Chongqi
AU - Liang, Lu
AU - Zhang, Binghui
AU - Qin, Zhentao
AU - Lian, Lixiang
AU - Zheng, Wei
AU - Lei, Yanyan
AU - Hu, Qinzeng
AU - Song, Shuai
AU - Mi, Chaopeng
AU - Wang, Tao
AU - Xu, Yadong
AU - Zha, Gangqiang
AU - Jie, Wanqi
N1 - Publisher Copyright:
© 2025 The Author(s). Advanced Science published by Wiley-VCH GmbH.
PY - 2025
Y1 - 2025
N2 - Efficient discrimination between fast neutrons and gamma rays is crucial yet challenging for radiation detection. Here, the successful growth of large-size, high-quality 2D organic–inorganic hybrid perovskite single crystals, (GABA)2PbBr4, via an in situ seed-assisted cooling method is reported. This material integrates hydrogen-rich GABA cations with heavy-atom lead halide layers, offering strong excitonic emission, efficient γ-ray absorption, and fast neutron sensitivity. X-ray diffraction reveals highly oriented crystals along the (004) plane with a narrow full width at half maximum (FWHM) of 12.81″. Optical characterizations indicate a wide bandgap (≈3.0 eV), sharp excitonic emission, and prominent self-trapped exciton behavior, supported by transient and temperature-dependent photoluminescence. The crystals exhibit an energy resolution of 9.0% at 662 keV and a high light yield of 10 695 ph MeV−1. Notably, superior neutron/gamma pulse shape discrimination (PSD) is achieved with a maximum figure-of-merit (FOM) of 1.74, enabling clear signal separation. Additionally, flexible composite scintillation films based on (GABA)2PbBr4 demonstrate high-resolution X-ray imaging up to 10 LP mm−1. These results highlight the potential of (GABA)2PbBr4 as a multifunctional scintillator for advanced radiation detection and imaging applications.
AB - Efficient discrimination between fast neutrons and gamma rays is crucial yet challenging for radiation detection. Here, the successful growth of large-size, high-quality 2D organic–inorganic hybrid perovskite single crystals, (GABA)2PbBr4, via an in situ seed-assisted cooling method is reported. This material integrates hydrogen-rich GABA cations with heavy-atom lead halide layers, offering strong excitonic emission, efficient γ-ray absorption, and fast neutron sensitivity. X-ray diffraction reveals highly oriented crystals along the (004) plane with a narrow full width at half maximum (FWHM) of 12.81″. Optical characterizations indicate a wide bandgap (≈3.0 eV), sharp excitonic emission, and prominent self-trapped exciton behavior, supported by transient and temperature-dependent photoluminescence. The crystals exhibit an energy resolution of 9.0% at 662 keV and a high light yield of 10 695 ph MeV−1. Notably, superior neutron/gamma pulse shape discrimination (PSD) is achieved with a maximum figure-of-merit (FOM) of 1.74, enabling clear signal separation. Additionally, flexible composite scintillation films based on (GABA)2PbBr4 demonstrate high-resolution X-ray imaging up to 10 LP mm−1. These results highlight the potential of (GABA)2PbBr4 as a multifunctional scintillator for advanced radiation detection and imaging applications.
KW - (GABA)PbBr single crystals
KW - fast neutron detection
KW - hybrid lead halide perovskites
KW - pulse shape discrimination
KW - scintillation imaging
UR - https://www.scopus.com/pages/publications/105024797078
U2 - 10.1002/advs.202518905
DO - 10.1002/advs.202518905
M3 - 文章
AN - SCOPUS:105024797078
SN - 2198-3844
JO - Advanced Science
JF - Advanced Science
ER -