• Login
    View Item 
    •   Home
    • Research
    • Articles
    • View Item
    •   Home
    • Research
    • Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguidePlumX LibguideSubmit an Item

    Statistics

    Display statistics

    Boosting Self-Trapped Emissions in Zero-Dimensional Perovskite Heterostructures

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    BB_Boosting self.pdf
    Size:
    1.216Mb
    Format:
    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2021-05-22
    Download
    Type
    Article
    Authors
    Yin, Jun cc
    Bredas, Jean-Luc
    Bakr, Osman cc
    Mohammed, Omar F. cc
    KAUST Department
    Chemical Science Program
    Functional Nanomaterials Lab (FuNL)
    KAUST Catalysis Center (KCC)
    KAUST Solar Center (KSC)
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Ultrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
    Date
    2020-05-22
    Online Publication Date
    2020-05-22
    Print Publication Date
    2020-06-23
    Embargo End Date
    2021-05-22
    Permanent link to this record
    http://hdl.handle.net/10754/662948
    
    Metadata
    Show full item record
    Abstract
    Zero-dimensional (0D) inorganic perovskites have attracted great interest for white-light-emitting applications due to their broadband emissions originating from self-trapped excitons. In this work, we explore and decipher exciton self-trapping in a series of 0D inorganic perovskites, A4PbX6 and A4SnX6 (A = K, Rb, and Cs; X = Cl, Br, and I) at the density functional theory level within the theoretical framework of the one-dimensional configuration coordinate diagram. We demonstrate that the formation of self-trapped states in A4PbX6 and A4SnX6 can be attributed to local structural distor-tions of individual [PbX6]4- and [SnX6]4- octahedra. Importantly, with the goal of both potentially improving the stability of the Sn derivatives and enhancing the emission efficiency, we further propose and design two types of 0D perovskite heter-ostructures, bulk A4PbX6/A4SnX6 mixtures and A4PbX6/A4SnX6 heterojunctions. We find that these 0D heterostructures exhibit type-I energy level alignment, in which energy transfer from A4PbX6 to A4SnX6 is strongly promoted. Interestingly, these heterostructures show an increase in the transition dipole moments between the ground and self-trapped states compared to the pristine 0D perovskites. Our findings provide a new material design strategy for boosting self-trapped emissions with improved air stability for white-light-emitting applications.
    Citation
    Yin, J., Bredas, J.-L., Bakr, O. M., & Mohammed, O. F. (2020). Boosting Self-Trapped Emissions in Zero-Dimensional Perovskite Heterostructures. Chemistry of Materials. doi:10.1021/acs.chemmater.0c00658
    Sponsors
    This work was supported by the King Abdullah University of Science and Technology (KAUST) and the College of Science of the University of Arizona. We acknowledge the Supercomputing Laboratory at KAUST for their computational and storage resources, as well as their efficient technical assistance.
    Publisher
    American Chemical Society (ACS)
    Journal
    Chemistry of Materials
    DOI
    10.1021/acs.chemmater.0c00658
    Additional Links
    https://pubs.acs.org/doi/10.1021/acs.chemmater.0c00658
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.chemmater.0c00658
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; Material Science and Engineering Program; KAUST Catalysis Center (KCC); KAUST Solar Center (KSC)

    entitlement

     
    DSpace software copyright © 2002-2021  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.