A bulk Schottky junction for high-sensitivity portable radiation detectors
Abstract The thickness of X-ray detectors needs to reach hundreds of micrometers to absorb X-ray, and therefore, high voltages over tens or hundreds of volts should be applied to extract X-ray-generated carriers. Here, we propose a bulk Schottky junction for X-ray detection using interpenetrated mac...
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| Format: | Article |
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Nature Portfolio
2024-11-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-54594-3 |
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| author | Yihan Zhang Zongming Huang Chenchen Peng Ning Gao Xie George Xu Yaping Li Cheng Zheng Wenjing Chen Yidong Yang Jingjing Zhao Junjie Yang Tao Chen Zhengguo Xiao |
| author_facet | Yihan Zhang Zongming Huang Chenchen Peng Ning Gao Xie George Xu Yaping Li Cheng Zheng Wenjing Chen Yidong Yang Jingjing Zhao Junjie Yang Tao Chen Zhengguo Xiao |
| author_sort | Yihan Zhang |
| collection | DOAJ |
| description | Abstract The thickness of X-ray detectors needs to reach hundreds of micrometers to absorb X-ray, and therefore, high voltages over tens or hundreds of volts should be applied to extract X-ray-generated carriers. Here, we propose a bulk Schottky junction for X-ray detection using interpenetrated macroporous-carbon electrodes and metal-halide perovskite networks. The X-ray-generated holes are extracted by the macroporous-carbon electrodes under the built-in electric field, while the electrons in the perovskite phase result in a high gain effect. A high sensitivity of 1.42×105 μC Gyair −1 cm−2 and a low detection limit of 48 nGyair s−1 at a low voltage of −1 V are achieved. We fabricated a dry battery-powered portable X-ray alarm prototype. The pixel detector shows a decent stability under X-ray exposure, and a spatial resolution of up to 5.0 lp mm−1, and the detector arrays also exhibit remarkable uniformity, demonstrating its potential application in X-ray imaging. |
| format | Article |
| id | doaj-art-f57f1bc70de34f2ea2efa7034aca0776 |
| institution | OA Journals |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-f57f1bc70de34f2ea2efa7034aca07762025-08-20T02:08:20ZengNature PortfolioNature Communications2041-17232024-11-011511910.1038/s41467-024-54594-3A bulk Schottky junction for high-sensitivity portable radiation detectorsYihan Zhang0Zongming Huang1Chenchen Peng2Ning Gao3Xie George Xu4Yaping Li5Cheng Zheng6Wenjing Chen7Yidong Yang8Jingjing Zhao9Junjie Yang10Tao Chen11Zhengguo Xiao12Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of ChinaHefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of ChinaHefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of ChinaSchool of Nuclear Science and Technology, University of Science and Technology of ChinaSchool of Nuclear Science and Technology, University of Science and Technology of ChinaCenter for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of ChinaDepartment of Engineering and Applied Physics, University of Science and Technology of ChinaHefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of ChinaDepartment of Engineering and Applied Physics, University of Science and Technology of ChinaSchool of Physical Science and Technology, Southwest UniversityHefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of ChinaHefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of ChinaHefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of ChinaAbstract The thickness of X-ray detectors needs to reach hundreds of micrometers to absorb X-ray, and therefore, high voltages over tens or hundreds of volts should be applied to extract X-ray-generated carriers. Here, we propose a bulk Schottky junction for X-ray detection using interpenetrated macroporous-carbon electrodes and metal-halide perovskite networks. The X-ray-generated holes are extracted by the macroporous-carbon electrodes under the built-in electric field, while the electrons in the perovskite phase result in a high gain effect. A high sensitivity of 1.42×105 μC Gyair −1 cm−2 and a low detection limit of 48 nGyair s−1 at a low voltage of −1 V are achieved. We fabricated a dry battery-powered portable X-ray alarm prototype. The pixel detector shows a decent stability under X-ray exposure, and a spatial resolution of up to 5.0 lp mm−1, and the detector arrays also exhibit remarkable uniformity, demonstrating its potential application in X-ray imaging.https://doi.org/10.1038/s41467-024-54594-3 |
| spellingShingle | Yihan Zhang Zongming Huang Chenchen Peng Ning Gao Xie George Xu Yaping Li Cheng Zheng Wenjing Chen Yidong Yang Jingjing Zhao Junjie Yang Tao Chen Zhengguo Xiao A bulk Schottky junction for high-sensitivity portable radiation detectors Nature Communications |
| title | A bulk Schottky junction for high-sensitivity portable radiation detectors |
| title_full | A bulk Schottky junction for high-sensitivity portable radiation detectors |
| title_fullStr | A bulk Schottky junction for high-sensitivity portable radiation detectors |
| title_full_unstemmed | A bulk Schottky junction for high-sensitivity portable radiation detectors |
| title_short | A bulk Schottky junction for high-sensitivity portable radiation detectors |
| title_sort | bulk schottky junction for high sensitivity portable radiation detectors |
| url | https://doi.org/10.1038/s41467-024-54594-3 |
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