Journal ArticleDOI
Ultralow Detection Limit and Robust Hard X-ray Imaging Detector Based on Inch-Sized Lead-Free Perovskite Cs3Bi2Br9 Single Crystals.
Xiang Li,Peng Zhang,Yunqiu Hua,Fucai Cui,Xueyin Sun,Lingfena Liu,Yanxiao Bi,Zhongjie Yue,Guodong Zhang,Xutang Tao +9 more
TLDR
In this paper , high-quality inch-size two-dimensional (2D) Cs3Bi2Br9 (CBB) single crystals are grown from a melt via the Bridgman method.Abstract:
Halide perovskites are promising candidates for soft X-ray detection (<80 keV) owing to their high X-ray absorption coefficient, resistivity, and mobility lifetime product. However, the lack of large high-quality single crystals (SCs) renders it challenging to manufacture robust hard X-ray imaging systems (>100 keV) with a low detection limit and stable dark current. Herein, high-quality inch-size two-dimensional (2D) Cs3Bi2Br9 (CBB) single crystals are grown from a melt via the Bridgman method. The crystal quality is enhanced by eliminating inclusions of CsBr-rich phases and restraining the trap-state density, leading to an enhanced resistivity of 1.41 × 1012 Ω cm and a mobility lifetime product of 8.32 × 10-4 cm2 V-1. The Au/CBB/Au single-crystal device exhibits a high sensitivity of 1705 μC Gyair-1 cm-2 in all-inorganic bismuth-based perovskites and an ultralow detection limit of 0.58 nGyair s-1 in all of the bismuth-based perovskites for 120 keV hard X-ray detection. The CBB detector exhibits high work stability with an ultralow dark current drift of 2.8 × 10-10 nA cm-1 s-1 V-1 and long-term air environment reliability under a high electric field of 10 000 V cm-1 owing to the ultrahigh ionic activation energy of the 2D structure. The proposed robust imaging system based on CBB SC is a promising tool for X-ray medical imaging and diagnostics.read more
Citations
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Journal ArticleDOI
Metal-Free PAZE-NH4X3·H2O Perovskite for Flexible Transparent X-ray Detection and Imaging.
TL;DR: In this article , multiple hydrogen-bonds metal-free PAZE-NH4X3·H2O perovskite were introduced to promote the stiffness of lattice, and increase the diffusion barrier to inhibit ionic migration.
Journal ArticleDOI
Perovskite semiconductors for ionizing radiation detection
TL;DR: In this paper , a comprehensive summary of the device preparation techniques is provided, followed by a profound discussion of the detector physics and broad applications of perovskite semiconductor detectors are illustrated.
Journal ArticleDOI
Scalable Fabrication of Metal Halide Perovskites for Direct X-ray Flat-Panel Detectors: A Perspective
Yuki Haruta,Mioko Kawakami,Yuui Nakano,Soumya Kundu,Shinji Wada,Takumi Ikenoue,Masao Miyake,Tetsuji Hirato,Makhsud I. Saidaminov +8 more
TL;DR: In this article , the authors summarize promising scalable perovskite deposition processes and discuss the challenges and opportunities toward direct X-ray FPD applications, and summarize the potential of scalable FPDs.
Journal ArticleDOI
Low Trap Density Para-F Substituted 2D PEA2PbX4 (X = Cl, Br, I) Single Crystals with Tunable Optoelectrical Properties and High Sensitive X-Ray Detector Performance
Jiayu Di,Haojin Li,Li Chen,Siyu Zhang,Yi Hu,Kai Sun,B. N. Peng,Jie Sun,Xue Zhao,Yu-Hang Fan,Zhenhua Lin,Yue Hao,Peng-Fan Gao,Kui Zhao,Jing Chong Chang +14 more
TL;DR: In this article , the effects of halogen anion engineering on PEA2PbX4 and its para-F substitution analogs were investigated using the facile solution method.
Journal ArticleDOI
Enhanced Carrier Transport in X‐Ray Detector Based on Cs3Bi2I9/MXene Composite Wafers
Shunyong Wei,Shujie Tie,Kai Shen,Huina Sun,Xiaojia Zheng,Hao Wang,Wenqing Liang,Ji-Peng Zou,Yixuan Huang,Ling-Yun Luo,Xiangyu Zhou,Tixiang Zeng,Aobo Ren,Degang Zhao,Jiang Wu +14 more
TL;DR: In this article , a scalable growth technology, a mechanical sintering process, which is applicable for the integration in image detectors is proposed in a Cs3Bi2I9/MXene composite wafer X-ray detector.
References
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Journal ArticleDOI
Sensitive X-ray detectors made of methylammonium lead tribromide perovskite single crystals
Haotong Wei,Yanjun Fang,Yanjun Fang,Padhraic Mulligan,William Chuirazzi,Hong-Hua Fang,Congcong Wang,Benjamin Ecker,Yongli Gao,Yongli Gao,Maria Antonietta Loi,Lei Cao,Jinsong Huang +12 more
TL;DR: In this paper, single-crystal perovskite devices 2-3 mm thick exhibit 16.4% X-ray detection efficiency with sensitivity four times higher than α-Se detectors.
Journal ArticleDOI
Imperfections and their passivation in halide perovskite solar cells
TL;DR: The recent advances in passivation of imperfections and suppressing ion migration to achieve improved efficiency and highly stable perovskite solar cells are reviewed.
Journal ArticleDOI
Cs 2 AgBiBr 6 single-crystal X-ray detectors with a low detection limit
Weicheng Pan,Haodi Wu,Jiajun Luo,Zhenzhou Deng,Zhenzhou Deng,Cong Ge,Chao Chen,Xiaowei Jiang,Wan-Jian Yin,Guangda Niu,Lujun Zhu,Lixiao Yin,Ying Zhou,Qingguo Xie,Xiaoxing Ke,Manling Sui,Jiang Tang +16 more
TL;DR: In this article, a solution-processed double perovskite Cs2AgBiBr6 single crystals are used to make a sensitive X-ray detector with a minimum detectable dose rate as low as 59.7 nGyair's−1.
Journal ArticleDOI
Cadmium zinc telluride and its use as a nuclear radiation detector material
Tuviah E. Schlesinger,James E. Toney,H Yoon,E. Y. Lee,B. A. Brunett,Larry Franks,Ralph B. James +6 more
TL;DR: A comprehensive review of the material properties of cadmium zinc telluride (CZT, Cd1ˇxZnxTe) with zinc content xa 0:1−0.2 is presented in this paper.
Journal ArticleDOI
Terahertz Conductivity within Colloidal CsPbBr3 Perovskite Nanocrystals: Remarkably High Carrier Mobilities and Large Diffusion Lengths
Gurivi Reddy Yettapu,Debnath Talukdar,Sohini Sarkar,Abhishek Swarnkar,Angshuman Nag,Prasenjit Ghosh,Pankaj Mandal +6 more
TL;DR: These results confirm a negligible influence of surface defects in trapping charge carriers, which in turn results into desirable intrinsic transport properties, from the perspective of device applications, such as remarkably high carrier mobility, large diffusion length, and high luminescence quantum yield.