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    Perovskite-Nanosheet Sensitizer for Highly Efficient Organic X-ray Imaging Scintillator

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    Name:
    Wang-et al-ACS EL-MS-Revised-Final.pdf
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    1.343Mb
    Format:
    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2022-11-27
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    Type
    Article
    Authors
    Wang, Jian-Xin cc
    Wang, Xiaojia
    Yin, Jun cc
    Gutierrez Arzaluz, Luis cc
    He, Tengyue
    Chen, Cailing cc
    Han, Yu cc
    Zhang, Yuhai cc
    Bakr, Osman cc
    Eddaoudi, Mohamed cc
    Mohammed, Omar F. cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Science Program
    Functional Materials Design, Discovery and Development (FMD3)
    Functional Nanomaterials Lab (FuNL)
    KAUST Catalysis Center (KCC)
    KAUST Solar Center (KSC)
    Material Science and Engineering Program
    Nanostructured Functional Materials (NFM) laboratory
    Physical Science and Engineering (PSE) Division
    Ultrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
    Date
    2021-11-27
    Embargo End Date
    2022-11-27
    Submitted Date
    2021-10-06
    Permanent link to this record
    http://hdl.handle.net/10754/673784
    
    Metadata
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    Abstract
    The weak X-ray capture capability of organic scintillators always leads to poor imaging resolution and detection sensitivity. Here, we realize an efficient and reabsorption-free organic scintillator at the interface of perovskite nanosheets using a very efficient energy transfer strategy. Our steady-state and ultrafast time-resolved experiments supported by density functional theory calculations demonstrate that an efficient interfacial energy transfer from the perovskite nanosheet to the organic chromophore with thermally activated delayed fluorescence (TADF) character can be achieved. Interestingly, we found that the direct harnessing of both singlet and triplet excitons of the TADF chromophores also contributed greatly to its remarkably enhanced radioluminescence intensity and X-ray sensitivity. A high X-ray imaging resolution of 135 μm and a low detection limit of 38.7 nGy/s were achieved in the fabricated X-ray imaging scintillator.
    Citation
    Wang, J.-X., Wang, X., Yin, J., Gutiérrez-Arzaluz, L., He, T., Chen, C., … Mohammed, O. F. (2021). Perovskite-Nanosheet Sensitizer for Highly Efficient Organic X-ray Imaging Scintillator. ACS Energy Letters, 10–16. doi:10.1021/acsenergylett.1c02173
    Sponsors
    This work was supported by King Abdullah University of Science and Technology (KAUST).
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Energy Letters
    DOI
    10.1021/acsenergylett.1c02173
    Additional Links
    https://pubs.acs.org/doi/10.1021/acsenergylett.1c02173
    ae974a485f413a2113503eed53cd6c53
    10.1021/acsenergylett.1c02173
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Functional Materials Design, Discovery and Development (FMD3); Chemical Science Program; Material Science and Engineering Program; KAUST Catalysis Center (KCC); KAUST Solar Center (KSC)

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