X-ray detectors are of pivotal importance for the scientific and technological progress in a wide range of medical,industrial,and scientific applications.Here,we take advantage of the printability of perovskite-based ...X-ray detectors are of pivotal importance for the scientific and technological progress in a wide range of medical,industrial,and scientific applications.Here,we take advantage of the printability of perovskite-based semiconductors and achieve a high X-ray sensitivity combined with the potential of an exceptional high spatial resolution by our origami-inspired folded perovskite X-ray detector.The high performance of our device is reached solely by the folded detector architecture and does not require any photolithography.The design and fabrication of a foldable perovskite sensor array is presented and the detector is characterized as a planar and as a folded device.Exposed to 50 kVp−150 kVp X-ray radiation,the planar detector reaches X-ray sensitivities of 25−35μC/(Gyaircm^(2)),whereas the folded detector achieves remarkably increased X-ray sensitivities of several hundredμC/(Gyaircm^(2))and a record value of 1409μC/(Gyaircm^(2))at 150 kVp without photoconductive gain.Finally,the potential of an exceptional high spatial resolution of the folded detector of more than 20 lp/mm under 150 kVp X-ray radiation is demonstrated.展开更多
基金the Deutsche Forschungsgemeinschaft(DFG,German Research Foundation)under Germany’s Excellence Strategy via the Excellence Cluster 3D Matter Made to Order(EXC-2082/1-390761711)by BMBF within the funding for the programme Forschungslabore Mikroelektronik Deutschland(ForLab)。
文摘X-ray detectors are of pivotal importance for the scientific and technological progress in a wide range of medical,industrial,and scientific applications.Here,we take advantage of the printability of perovskite-based semiconductors and achieve a high X-ray sensitivity combined with the potential of an exceptional high spatial resolution by our origami-inspired folded perovskite X-ray detector.The high performance of our device is reached solely by the folded detector architecture and does not require any photolithography.The design and fabrication of a foldable perovskite sensor array is presented and the detector is characterized as a planar and as a folded device.Exposed to 50 kVp−150 kVp X-ray radiation,the planar detector reaches X-ray sensitivities of 25−35μC/(Gyaircm^(2)),whereas the folded detector achieves remarkably increased X-ray sensitivities of several hundredμC/(Gyaircm^(2))and a record value of 1409μC/(Gyaircm^(2))at 150 kVp without photoconductive gain.Finally,the potential of an exceptional high spatial resolution of the folded detector of more than 20 lp/mm under 150 kVp X-ray radiation is demonstrated.
