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    Conformal Organohalide Perovskites Enable Lasing on Spherical Resonators

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    Type
    Article
    Authors
    Sutherland, Brandon R.
    Hoogland, Sjoerd
    Adachi, Michael M.
    Wong, Chris T. O.
    Sargent, Edward H. cc
    KAUST Grant Number
    KUS-11-009-21
    Date
    2014-10-17
    Online Publication Date
    2014-10-17
    Print Publication Date
    2014-10-28
    Permanent link to this record
    http://hdl.handle.net/10754/597833
    
    Metadata
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    Abstract
    © 2014 American Chemical Society. Conformal integration of semiconductor gain media is broadly important in on-chip optical communication technology. Here we deploy atomic layer deposition to create conformally deposited organohalide perovskites-an attractive semiconducting gain medium-with the goal of achieving coherent light emission on spherical optical cavities. We demonstrate the high quality of perovskite gain media fabricated with this method, achieving optical gain in the nanosecond pulse regime with a threshold for amplified spontaneous emission of 65 ± 8 μJ cm-2. Through variable stripe length measurements, we report a net modal gain of 125 ± 22 cm-1 and a gain bandwidth of 50 ± 14 meV. Leveraging the high quality of the gain medium, we conformally coat silica microspheres with perovskite to form whispering gallery mode optical cavities and achieve lasing.
    Citation
    Sutherland BR, Hoogland S, Adachi MM, Wong CTO, Sargent EH (2014) Conformal Organohalide Perovskites Enable Lasing on Spherical Resonators. ACS Nano 8: 10947–10952. Available: http://dx.doi.org/10.1021/nn504856g.
    Sponsors
    This publication is based in part on work supported by an award (KUS-11-009-21) from the 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. The authors thank S. Boccia for FIB and SEM imaging of ALD perovskite-coated microspheres, and S.-R. Jean for help with figure art.
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Nano
    DOI
    10.1021/nn504856g
    PubMed ID
    25313937
    ae974a485f413a2113503eed53cd6c53
    10.1021/nn504856g
    Scopus Count
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