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    Efficient Luminescence from Perovskite Quantum Dot Solids

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    Type
    Article
    Authors
    Kim, Younghoon cc
    Yassitepe, Emre
    Voznyy, Oleksandr cc
    Comin, Riccardo
    Walters, Grant
    Gong, Xiwen
    Kanjanaboos, Pongsakorn
    Nogueira, Ana F.
    Sargent, Edward H. cc
    KAUST Grant Number
    KUS-11-009-21
    Date
    2015-11-05
    Online Publication Date
    2015-11-05
    Print Publication Date
    2015-11-18
    Permanent link to this record
    http://hdl.handle.net/10754/598109
    
    Metadata
    Show full item record
    Abstract
    © 2015 American Chemical Society. Nanocrystals of CsPbX3 perovskites are promising materials for light-emitting optoelectronics because of their colloidal stability, optically tunable bandgap, bright photoluminescence, and excellent photoluminescence quantum yield. Despite their promise, nanocrystal-only films of CsPbX3 perovskites have not yet been fabricated; instead, highly insulating polymers have been relied upon to compensate for nanocrystals' unstable surfaces. We develop solution chemistry that enables single-step casting of perovskite nanocrystal films and overcomes problems in both perovskite quantum dot purification and film fabrication. Centrifugally cast films retain bright photoluminescence and achieve dense and homogeneous morphologies. The new materials offer a platform for optoelectronic applications of perovskite quantum dot solids.
    Citation
    Kim Y, Yassitepe E, Voznyy O, Comin R, Walters G, et al. (2015) Efficient Luminescence from Perovskite Quantum Dot Solids. ACS Applied Materials & Interfaces 7: 25007–25013. Available: http://dx.doi.org/10.1021/acsami.5b09084.
    Sponsors
    This publication is based in part on work supported by Award KUS-11-009-21, made by King Abdullah University of Science and Technology (KAUST), by the Ontario Research Fund Research Excellence Program, and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. E.Y. acknowledges support from Sao Paulo State Research Foundation-Research Internships Abroad (FAPESP-BEPE) (2014/18327-9) fellowship. The authors thank E. Palmiano, R. Wolowiec, and D. Kopilovic for their technical help over the course of this study. We thank the Centre for Microfluidic Systems in Chemistry and Biology (Toronto, Ontario) for the use of an atomic force microscope.
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Applied Materials & Interfaces
    DOI
    10.1021/acsami.5b09084
    PubMed ID
    26529572
    ae974a485f413a2113503eed53cd6c53
    10.1021/acsami.5b09084
    Scopus Count
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