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Shao W, He T, Wang L, Wang JX, Zhou Y, Shao B, Ugur E, Wu W, Zhang Z, Liang H, De Wolf S, Bakr OM, Mohammed OF. Capillary Manganese Halide Needle-Like Array Scintillator with Isolated Light Crosstalk for Micro-X-Ray Imaging. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312053. [PMID: 38340045 DOI: 10.1002/adma.202312053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/02/2024] [Indexed: 02/12/2024]
Abstract
The exacerbation of inherent light scattering with increasing scintillator thickness poses a major challenge for balancing the thickness-dependent spatial resolution and scintillation brightness in X-ray imaging scintillators. Herein, a thick pixelated needle-like array scintillator capable of micrometer resolution is fabricated via waveguide structure engineering. Specifically, this involves integrating a straightforward low-temperature melting process of manganese halide with an aluminum-clad capillary template. In this waveguide structure, the oriented scintillation photons propagate along the well-aligned scintillator and are confined within individual pixels by the aluminum reflective cladding, as substantiated from the comprehensive analysis including laser diffraction experiments. Consequently, thanks to isolated light-crosstalk channels and robust light output due to increased thickness, ultrahigh spatial resolutions of 60.8 and 51.7 lp mm-1 at a modulation transfer function (MTF) of 0.2 are achieved on 0.5 mm and even 1 mm thick scintillators, respectively, which both exceed the pore diameter of the capillary arrays' template (Φ = 10 µm). As far as it is known, these micrometer resolutions are among the highest reported metal halide scintillators and are never demonstrated on such thick scintillators. Here an avenue is presented to the demand for thick scintillators in high-resolution X-ray imaging across diverse scientific and practical fields.
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Affiliation(s)
- Wenyi Shao
- Advanced Membranes and Porous Materials Center (AMPMC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
- School of Microelectronics, Dalian University of Technology, Dalian, 116024, China
| | - Tengyue He
- Advanced Membranes and Porous Materials Center (AMPMC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Lijie Wang
- Advanced Membranes and Porous Materials Center (AMPMC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Jian-Xin Wang
- Advanced Membranes and Porous Materials Center (AMPMC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Yang Zhou
- Advanced Membranes and Porous Materials Center (AMPMC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Bingyao Shao
- Advanced Membranes and Porous Materials Center (AMPMC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Esma Ugur
- KAUST Solar Center (KSC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Wentao Wu
- Advanced Membranes and Porous Materials Center (AMPMC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Zhenzhong Zhang
- School of Microelectronics, Dalian University of Technology, Dalian, 116024, China
| | - Hongwei Liang
- School of Microelectronics, Dalian University of Technology, Dalian, 116024, China
| | - Stefaan De Wolf
- KAUST Solar Center (KSC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Osman M Bakr
- KAUST Catalysis Center (KCC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Omar F Mohammed
- Advanced Membranes and Porous Materials Center (AMPMC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
- KAUST Catalysis Center (KCC), Division of Physical Science and Engineering (PSE), King Abdullah University of Science (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
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Han L, Zhao J, Wang L, Peng G, Xu Y, Yuan M, Miao Y, Ci Z, Jin Z. Metal Halide Nanocrystals@Silica Aerogel Composite with Enhanced Dispersion Stability and Light Output for Efficient X-Ray Imaging in Harsh Environment. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307758. [PMID: 38100187 DOI: 10.1002/smll.202307758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/01/2023] [Indexed: 05/25/2024]
Abstract
Metal halide nanocrystals (MHNCs) embedded in a polymer matrix as flexible X-ray detector screens is an effective strategy with the advantages of low cost, facile preparation, and large area flexibility. However, MHNCs easily aggregate during preparation, recombination, under mechanical force, storage, or high operating temperature. Meanwhile, it shows an unmatched refractive index with polymer, resulting in low light yield. The related stability and properties of the device remain a huge unrevealed challenge. Herein, a composite screen (CZBM@AG-PS) by integrating MHNCs (Cs2ZnBr4: Mn2+ as an example) into silica aerogel (AG) and embedded in polystyrene (PS) is successfully developed. Further characterization points to the high porosity AG template that can effectively improve the dispersion of MHNCs in polymer detector screens, essentially decreasing nonradiative transition, Rayleigh scattering, and performance aging induced by aggregation in harsh environments. Furthermore, the higher light output and lower optical crosstalk are also achieved by a novel light propagation path based on the MHNCs/AG and AG/PS interfaces. Finally, the optimized CZBM@AG-PS screen shows much enhanced light yield, spatial resolution, and temperature stability. Significantly, the strategy is proven universal by the performance tests of other MHNCs embedded composite films for ultra-stable and efficient X-ray imaging.
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Affiliation(s)
- Lili Han
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Jihao Zhao
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Lijuan Wang
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Guoqiang Peng
- School of Physical Science and Technology & School of Materials and Energy, Lanzhou University, Lanzhou, 730000, China
| | - Youkui Xu
- School of Physical Science and Technology & School of Materials and Energy, Lanzhou University, Lanzhou, 730000, China
| | - Minglang Yuan
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Yifan Miao
- Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Zhipeng Ci
- School of Physical Science and Technology & School of Materials and Energy, Lanzhou University, Lanzhou, 730000, China
| | - Zhiwen Jin
- School of Physical Science and Technology & School of Materials and Energy, Lanzhou University, Lanzhou, 730000, China
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Chen H, Li Z, Wang S, Peng G, Lan W, Wang H, Jin Z. Molecular Design of Layered Hybrid Silver Bismuth Bromine Single Crystal for Ultra-Stable X-Ray Detection With Record Sensitivity. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2308872. [PMID: 38013622 DOI: 10.1002/adma.202308872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/15/2023] [Indexed: 11/29/2023]
Abstract
Nowadays, weak interlayer coupling and unclear mechanism in layered hybrid silver bismuth bromine (LH-AgBiBr) are the main reasons for limiting its further enhanced X-ray detection sensitivity and stability. Herein, the design rules for LH-AgBiBr and its influence on X-ray detection performance are reported for the first time. Although shortening amine size can enhance interlayer coupling, its detection performance is severely hampered by its easier defect formation caused by enlarged micro strain. In contrast, an appropriate divalent amine design endows the material with improved interlayer coupling and released micro strain, which benefits crystal stability and mechanical hardness. Another contribution is to increase material density and dielectric constant; thus, enhancing X-ray absorption and carrier transport. Consequently, the optimized parallel device based on BDA2 AgBiBr8 achieves a record sensitivity of 2638 µC Gyair -1 cm-2 and an ultra-low detection limit of 7.4 nGyair s-1 , outperforming other reported LH-AgBiBr X-ray detectors. Moreover, the unencapsulated device displays remarkable anti-moisture, anti-thermal (>150 °C), and anti-radiation (>1000 Gyair ) endurance. Eventually, high-resolution hard X-ray imaging is demonstrated by linear detector arrays under a benign dose rate (1.63 µGyair s-1 ) and low external bias (5 V). Hence, these findings provide guidelines for future materials design and device optimization.
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Affiliation(s)
- Huanyu Chen
- School of Physical Science and Technology, Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory of Quantum Theory and Applications of MOE, Lanzhou University, Lanzhou University, Lanzhou, 730000, China
| | - ZhenHua Li
- School of Physical Science and Technology, Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory of Quantum Theory and Applications of MOE, Lanzhou University, Lanzhou University, Lanzhou, 730000, China
| | - Shuo Wang
- School of Physical Science and Technology, Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory of Quantum Theory and Applications of MOE, Lanzhou University, Lanzhou University, Lanzhou, 730000, China
| | - Guoqiang Peng
- School of Physical Science and Technology, Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory of Quantum Theory and Applications of MOE, Lanzhou University, Lanzhou University, Lanzhou, 730000, China
| | - Wei Lan
- School of Physical Science and Technology, Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory of Quantum Theory and Applications of MOE, Lanzhou University, Lanzhou University, Lanzhou, 730000, China
| | - Haoxu Wang
- School of Physical Science and Technology, Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory of Quantum Theory and Applications of MOE, Lanzhou University, Lanzhou University, Lanzhou, 730000, China
| | - Zhiwen Jin
- School of Physical Science and Technology, Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory of Quantum Theory and Applications of MOE, Lanzhou University, Lanzhou University, Lanzhou, 730000, China
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Li Y, Gui P, Wei S, Sun Y, Yang L, Hu Y, Chen Z, Wang S, Zeng W, Ren X, Huang Z. Template-Assisted Synthesis of 2D Perovskite Grating Single Crystal Films at Low Temperatures for UV Polarization-Sensitive Photodetectors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2305207. [PMID: 37963824 DOI: 10.1002/smll.202305207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/15/2023] [Indexed: 11/16/2023]
Abstract
2D perovskites have attracted tremendous attention due to their superior optoelectronic properties and potential applications in optoelectronic devices. Especially, the larger bandgap of 2D perovskite means that they are suitable for UV photodetection. However, the layered structure of 2D perovskites hinders the interlayer carrier transport, which limits the improvement of device performance. Therefore, nanoscale structures are normally used to enhance the light absorption ability, which is an effective strategy to improve the photocurrent in 2D perovskite-based photodetectors. Herein, a template-assisted low-temperature method is proposed to fabricate 2D perovskite ((C6 H5 C2 H4 NH3 )2 PbBr4 , (PEA)2 PbBr4 ) grating single crystal films (GSCFs). The crystallinity of the (PEA)2 PbBr4 GSCFs is significantly improved due to the slow evaporation of the precursor solution under low temperatures. Based on this high crystalline quality and extremely ordered microstructures, the metal-semiconductor-metal photodetectors are assembled. Finite-different time-domain (FDTD) simulation and experiment indicate that the GSCF-based photodetectors exhibit significantly improved performance in comparison with the plane devices. The optimized 2D perovskite photodetectors are sensitive to UV light and demonstrate a responsivity and detectivity of 28.6 mA W-1 and 2.4 × 1011 Jones, respectively. Interestingly, the photocurrent of this photodetector varies as the angle of the incident polarized light, resulting in a high polarization ratio of 1.12.
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Affiliation(s)
- Yanhui Li
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, No. 111 Jiulong Road, Hefei, Anhui, 230601, P. R. China
| | - Pengbin Gui
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, No. 111 Jiulong Road, Hefei, Anhui, 230601, P. R. China
| | - Shengyang Wei
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, No. 111 Jiulong Road, Hefei, Anhui, 230601, P. R. China
| | - Yanming Sun
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, No. 111 Jiulong Road, Hefei, Anhui, 230601, P. R. China
| | - Liangpan Yang
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, No. 111 Jiulong Road, Hefei, Anhui, 230601, P. R. China
| | - Yali Hu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, No. 111 Jiulong Road, Hefei, Anhui, 230601, P. R. China
| | - Zhiliang Chen
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, No. 111 Jiulong Road, Hefei, Anhui, 230601, P. R. China
| | - Siliang Wang
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, No. 111 Jiulong Road, Hefei, Anhui, 230601, P. R. China
| | - Wei Zeng
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, No. 111 Jiulong Road, Hefei, Anhui, 230601, P. R. China
| | - Xingang Ren
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, No. 111 Jiulong Road, Hefei, Anhui, 230601, P. R. China
| | - Zhixiang Huang
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Industry-Education-Research Institute of Advanced Materials and Technology for Integrated Circuits, Anhui University, No. 111 Jiulong Road, Hefei, Anhui, 230601, P. R. China
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Wang Y, Li M, Chai Z, Wang Y, Wang S. Perovskite Scintillators for Improved X-ray Detection and Imaging. Angew Chem Int Ed Engl 2023; 62:e202304638. [PMID: 37258939 DOI: 10.1002/anie.202304638] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 05/26/2023] [Accepted: 05/31/2023] [Indexed: 06/02/2023]
Abstract
Halide perovskites (HPs) recently have emerged as one class of competitive scintillators for X-ray detection and imaging owing to its high quantum efficiency, short decay time, superior X-ray absorption capacity, low cost, and ease of crystal growth. The tunable structure and versatile chemical compositions of halide perovskites provide distinguishable advantages over traditional inorganic scintillators for optimizing scintillation performance. Since the first observation of the scintillation phenomenon in HPs, substantial efforts have been devoted to expanding the inventory of HP scintillators and regulating material properties. Understanding the relationship between the structure and scintillation properties of HP scintillators is essential for developing materials with improved X-ray detection and imaging capacities. This review summarizes strategies for improving the light yield of HP scintillators and provides a roadmap for improving the X-ray imaging performance. Additionally, methods for controlling the light propagation direction in HP scintillators are highlighted for improving X-ray imaging resolution. Finally, we highlight the current challenge in HP scintillators and provide a perspective on the future development of this emerging scintillator.
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Affiliation(s)
- Yumin Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
| | - Ming Li
- Radiotherapy Center of the Second People's Hospital of Lianyungang, Lianyungang, 222000, China
| | - Zhifang Chai
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
| | - Yaxing Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
| | - Shuao Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
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