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dc.contributor.authorZhang, Yuhai
dc.contributor.authorSun, Ruijia
dc.contributor.authorOu, Xiangyu
dc.contributor.authorFu, Kaifang
dc.contributor.authorChen, Qiushui
dc.contributor.authorDing, Yuchong
dc.contributor.authorXu, Liang-Jin
dc.contributor.authorLiu, Lingmei
dc.contributor.authorHan, Yu
dc.contributor.authorMalko, Anton V.
dc.contributor.authorLiu, Xiaogang
dc.contributor.authorYang, Huanghao
dc.contributor.authorBakr, Osman
dc.contributor.authorLiu, Hong
dc.contributor.authorMohammed, Omar F.
dc.date.accessioned2019-02-10T08:16:25Z
dc.date.available2019-02-10T08:16:25Z
dc.date.issued2019-02-05
dc.identifier.citationZhang Y, Sun R, Ou X, Fu K, Chen Q, et al. (2019) Metal Halide Perovskite Nanosheet for X-Ray High-Resolution Scintillation-Imaging Screens. ACS Nano. Available: http://dx.doi.org/10.1021/acsnano.8b09484.
dc.identifier.issn1936-0851
dc.identifier.issn1936-086X
dc.identifier.doi10.1021/acsnano.8b09484
dc.identifier.urihttp://hdl.handle.net/10754/631023
dc.description.abstractScintillators, which are capable of converting ionizing radiation into visible photons, are an integral part of medical, security, and commercial diagnostics technologies such as X-ray imaging, nuclear cameras, and computed tomography. Conventional scintillator fabrication typically involves high-temperature sintering, generating agglomerated powders or large bulk crystals, which pose major challenge for device integration and processability. On the other hand, colloidal quantum dot scintillators cannot be cast into compact solid films with the necessary thickness required for most X-ray applications. Here, we report the room-temperature synthesis of a colloidal scintillator comprising CsPbBr3 nanosheets of large concentration (up to 150 mg/mL). The CsPbBr3 colloid exhibits a higher light yield (~21000 photons/MeV) than the commercially available Ce:LuAG single-crystal scintillator (~18000 photons/MeV). Scintillators based on these nanosheets display both strong radioluminescence and long-term stability under X-ray illumination. Importantly, the colloidal scintillator can be readily cast into a uniform crack-free large area film (8.5×8.5 cm2 in area) with the requisite thickness for high-resolution X-ray imaging applications. We showcase prototype applications of these high-quality scintillating films as X-ray imaging screens for a cellphone panel and a standard central processing unit (CPU) chip. Our radiography prototype combines large-area processability with high resolution and a strong penetration ability to sheath materials, such as resin and silicon. We reveal an energy transfer process inside those stacked nanosheet solids that is responsible for their superb scintillation performance. Our findings demonstrate a large-area solution-processed scintillator of stable and efficient radioluminescence, paving the way for low-cost radiography and X-ray imaging devices.
dc.description.sponsorshipThis work was supported by both University of Jinan and King Abdullah University of Science and Technology (KAUST). Y. Z. has been supported by both National Natural Science Foundation of China (grant # 21805111) and Taishan Scholar Fund. A. V. M. has been supported by the US NSF-CAREER grant #1350800. He gratefully acknowledges travel support from CRDF Global at early stages of the work.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acsnano.8b09484
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsnano.8b09484.
dc.subjectperovskite
dc.subjectcolloidal scintillator
dc.subjectself-assembly
dc.subjectX-ray imaging
dc.subjectenergy transfer
dc.subjectnanosheets
dc.titleMetal Halide Perovskite Nanosheet for X-Ray High-Resolution Scintillation-Imaging Screens
dc.typeArticle
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentChemical Science Program
dc.contributor.departmentMaterials Science and Engineering Program
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.identifier.journalACS Nano
dc.eprint.versionPost-print
dc.contributor.institutionInstitute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan 250022, Shandong, China
dc.contributor.institutionMOE Key Laboratory for Analytical Science of Food Safety and Biology, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002 China
dc.contributor.institutionDepartment of Chemistry, National University of Singapore, Singapore 117543, Singapore
dc.contributor.institutionResearch & Development Center of Material and Equipment, China Electronics Technology Group, Corporation No. 26 Research Institute, Chongqing 400060, China
dc.contributor.institutionDepartment of Physics, The University of Texas at Dallas, Richardson, TX, 75080, USA
kaust.authorZhang, Yuhai
kaust.authorXu, Liang-Jin
kaust.authorLiu, Lingmei
kaust.authorHan, Yu
kaust.authorBakr, Osman
kaust.authorMohammed, Omar F.
refterms.dateFOA2019-02-10T08:36:49Z


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