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    Carrier Dynamics, Optical Gain, and Lasing with Colloidal Quantum Wells

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    Nanoplatelets_laser_5.10_plain.docx (101.2Kb)
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    Links to Files
    https://pubs.acs.org/doi/abs/10.1021/acs.jpcc.7b12629
    Permanent Link
    10.1021/acs.jpcc.7b12629
    http://hdl.handle.net/11603/7901
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    • UMBC Faculty Collection
    • UMBC Physics Department
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    Author/Creator
    Yang, Zhili
    Pelton, Matthew
    Fedin, Igor
    Talapin, Dmitri V.
    Waks, Edo
    Date
    2018
    Type of Work
    6 pages
    Text
    journal articles
    Citation of Original Publication
    Carrier Dynamics, Optical Gain, and Lasing with Colloidal Quantum Wells Matthew Pelton The Journal of Physical Chemistry C Article ASAP DOI: 10.1021/acs.jpcc.7b12629
    Rights
    This item may be protected under Title 17 of the U.S. Copyright Law. It is made available by UMBC for non-commercial research and education. For permission to publish or reproduce, please contact the author.
    Subjects
    colloidal quantum wells
    cadmium chalcogenide nanoplatelets
    relaxation and recombination dynamics of electrons and holes
    excitons
    nanoplatelets
    optical gain and lasing
    nanoplatelet lasers
    Abstract
    The most recent class of semiconductor nanocrystal to be synthesized colloidally is the quantum well, in which carriers are confined quantum mechanically in only one dimension. Electrons and holes in colloidal quantum wells undergo different dynamics than in either colloidal quantum dots or epitaxially grown quantum wells, providing new opportunities for applications. The opportunities presented by cadmium chalcogenide nanoplatelets are particularly exciting, because they can be grown with control over their thickness down to the single atomic layer and with all nanoplatelets in an ensemble having the same thickness. This article reviews the relaxation and recombination dynamics of electrons and holes, which are tightly bound into excitons, in nanoplatelets. These dynamics are favorable for optical gain and lasing, and this Article reviews the progress that has been made toward practical realization of nanoplatelet lasers, including the demonstration of low thresholds for room-temperature gain and lasing. Looking forward, the engineering of nanoplatelet heterostructures provides new opportunities to control carrier dynamics, opening up in particular the possibility of observing strong multiexcitonic effects at room temperature.


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    Albin O. Kuhn Library & Gallery
    University of Maryland, Baltimore County
    1000 Hilltop Circle
    Baltimore, MD 21250
    www.umbc.edu/scholarworks

    Contact information:
    Email: scholarworks-group@umbc.edu
    Phone: 410-455-3021


    If you wish to submit a copyright complaint or withdrawal request, please email mdsoar-help@umd.edu.