Two-Dimensional Perovskite Single Crystals for High-Performance X-ray Imaging and Exploring MeV X-ray Detection

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外文摘要：Scintillation semiconductors play increasingly important medical diagnosis and industrial inspection roles.Recently,two-dimensional(2D)perovskites have been shown to be promising materials for medical X-ray imaging,but they are mostly used in low-energy(≤130 keV)regions.Direct detection of MeV X-rays,which ensure thorough penetration of the thick shell walls of containers,trucks,and aircraft,is also highly desired in practical industrial applications.Unfortunately,scintillation semiconductors for high-energy X-ray detection are currently scarce.Here,This paper reports a 2D(C4H9NH3)2PbBr4 single crystal with outstanding sensitivity and stability toward X-ray radiation that provides an ultra-wide detectable X-ray range of between 8.20 nGyair s-1(50 keV)and 15.24 mGyair s-1(9 MeV).The(C4H9NH3)2PbBr4 single-crystal detector with a vertical structure is used for high-performance X-ray imaging,delivering a good spatial resolution of 4.3 Ip mm-1 in a plane-scan imaging system.Low ionic migration in the 2D perovskite enables the vertical device to be operated with hundreds of keV to MeV X-ray radiation at high bias voltages,leading to a sensitivity of 46.90 μC Gyair-1 cm-2(-1.16 V μm-1)with 9 MeV X-ray radiation,demonstrating that 2D perovskites have enormous potential for high-energy industrial applications.

外文关键词：

MeV X-ray detectionsingle-crystal X-ray detectorstwo-dimensional perovskitesX-ray imaging

作者：

Xieming Xu、Yiheng Wu、Yi Zhang、Xiaohui Li、Fang Wang、Xiaoming Jiang、Shaofan Wu、Shuaihua Wang

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作者单位：

Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China

University of Chinese Academy of Sciences,Beijing 100049,China

Division of Nuclear Technology and Applications,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350108,China

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出版年：

2024

DOI：

10.1002/eem2.12487

能源与环境材料(英文)

ISSN：

年,卷(期)：2024.7(1)