TY - JOUR
T1 - High-Performance X-ray Detection and Imaging Using ⟨110⟩-Oriented 2D (AABA)PbBr3·H2O Perovskite Single Crystals
AU - Liu, Chongqi
AU - Zheng, Wei
AU - Xu, Lingyan
AU - Wang, Yingming
AU - Lian, Lixiang
AU - Liang, Lu
AU - Qin, Zhentao
AU - Lei, Yanyan
AU - Hu, Qinzeng
AU - Jie, Wanqi
N1 - Publisher Copyright:
© 2025 American Chemical Society.
PY - 2025
Y1 - 2025
N2 - Two-dimensional (2D) ⟨100⟩-oriented MHPs offer broad application prospects in X-ray detection due to extremely low detection limits and noise. Their multiquantum well structure limits interlayer carrier transport, significantly reducing X-ray sensitivity. High-quality, large-sized (AABA)PbBr3·H2O single crystals with ⟨110⟩ orientation were grown using an improved cooling crystallization method. The interconnected [PbX6]4- octahedra resulted in an inorganic layer spacing of 6.8615 Å. This small interlayer spacing enhances electron cloud overlap and improves interlayer transport. Ethyl side chains increase steric hindrance. A Pb-Br-Pb bond angle of 172.59° reduces octahedral tilting, weakening electron-phonon coupling and promoting charge transport. The (AABA)PbBr3·H2O X-ray detector exhibited excellent X-ray detection capabilities with sensitivity as high as 440 μC·Gyair-1·cm-2 at 50 keV X-ray and detection limit as low as 20.85 nGyair·s-1, setting a leading benchmark for 2D MHPs. Undistorted X-ray imaging was achieved at low dose rates (30.83 μGyair·s-1) with the (AABA)PbBr3·H2O X-ray detector, and excellent stability was exhibited to meet requirements for dynamic digital imaging. The (AABA)PbBr3·H2O X-ray detector shows a high potential for medical diagnostics.
AB - Two-dimensional (2D) ⟨100⟩-oriented MHPs offer broad application prospects in X-ray detection due to extremely low detection limits and noise. Their multiquantum well structure limits interlayer carrier transport, significantly reducing X-ray sensitivity. High-quality, large-sized (AABA)PbBr3·H2O single crystals with ⟨110⟩ orientation were grown using an improved cooling crystallization method. The interconnected [PbX6]4- octahedra resulted in an inorganic layer spacing of 6.8615 Å. This small interlayer spacing enhances electron cloud overlap and improves interlayer transport. Ethyl side chains increase steric hindrance. A Pb-Br-Pb bond angle of 172.59° reduces octahedral tilting, weakening electron-phonon coupling and promoting charge transport. The (AABA)PbBr3·H2O X-ray detector exhibited excellent X-ray detection capabilities with sensitivity as high as 440 μC·Gyair-1·cm-2 at 50 keV X-ray and detection limit as low as 20.85 nGyair·s-1, setting a leading benchmark for 2D MHPs. Undistorted X-ray imaging was achieved at low dose rates (30.83 μGyair·s-1) with the (AABA)PbBr3·H2O X-ray detector, and excellent stability was exhibited to meet requirements for dynamic digital imaging. The (AABA)PbBr3·H2O X-ray detector shows a high potential for medical diagnostics.
UR - http://www.scopus.com/inward/record.url?scp=105008819397&partnerID=8YFLogxK
U2 - 10.1021/acs.cgd.5c00367
DO - 10.1021/acs.cgd.5c00367
M3 - 文章
AN - SCOPUS:105008819397
SN - 1528-7483
JO - Crystal Growth and Design
JF - Crystal Growth and Design
ER -