Stable perovskite single-crystal X-ray imaging detectors with single-photon sensitivity
| العنوان: | Stable perovskite single-crystal X-ray imaging detectors with single-photon sensitivity |
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| المؤلفون: | Kostiantyn Sakhatskyi, Bekir Turedi, Gebhard J. Matt, Erfu Wu, Anastasiia Sakhatska, Vitalii Bartosh, Muhammad Naufal Lintangpradipto, Rounak Naphade, Ivan Shorubalko, Omar F. Mohammed, Sergii Yakunin, Osman M. Bakr, Maksym V. Kovalenko |
| المصدر: | Nature Photonics, 17 (6) |
| بيانات النشر: | Springer Science and Business Media LLC, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials |
| الوصف: | A major thrust of medical X-ray imaging is to minimize the X-ray dose acquired by the patient, down to single-photon sensitivity. Such characteristics have been demonstrated with only a few direct-detection semiconductor materials such as CdTe and Si; nonetheless, their industrial deployment in medical diagnostics is still impeded by elaborate and costly fabrication processes. Hybrid lead halide perovskites can be a viable alternative owing to their facile solution growth. However, hybrid perovskites are unstable under high-field biasing in X-ray detectors, owing to structural lability and mixed electronic-ionic conductivity. Here we show that both single-photon-counting and long-term stable performance of perovskite X-ray detectors are attained in the photovoltaic mode of operation at zero-voltage bias, employing thick and uniform methylammonium lead iodide single-crystal films (up to 300 mu m) and solution directly grown on hole-transporting electrodes. The operational device stability exceeded one year. Detection efficiency of 88% and noise-equivalent dose of 90 pGy(air) are obtained with 18 keV X-rays, allowing single-photon-sensitive, low-dose and energy-resolved X-ray imaging. Array detectors demonstrate high spatial resolution up to 11 lp mm(-1). These findings pave the path for the implementation of hybrid perovskites in low-cost, low-dose commercial detector arrays for X-ray imaging. Nature Photonics, 17 (6) ISSN:1749-4885 ISSN:1749-4893 |
| وصف الملف: | application/application/pdf |
| تدمد: | 1749-4893 1749-4885 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14a06377581b749f0ed9f3e4be19ce63 https://doi.org/10.1038/s41566-023-01207-y |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....14a06377581b749f0ed9f3e4be19ce63 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 17494893 17494885 |
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