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    Reduced ion migration and enhanced photoresponse in cuboid crystals of methylammonium lead iodide perovskite

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    Name:
    Zhumekenov+et+al_2018_J._Phys._D__Appl._Phys._10.1088_1361-6463_aaefdf.pdf
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    Type
    Article
    Authors
    Zhumekenov, Ayan A
    Haque, Mohammed cc
    Yin, Jun cc
    El-Zohry, Ahmed
    Lee, Kwangjae
    Dursun, Ibrahim cc
    Mohammed, Omar F. cc
    Baran, Derya cc
    Bakr, Osman cc
    KAUST Department
    Chemical Science Program
    Functional Nanomaterials Lab (FuNL)
    KAUST Catalysis Center (KCC)
    KAUST Solar Center (KSC)
    Material Science and Engineering
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Ultrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
    Date
    2018-11-28
    Online Publication Date
    2018-11-28
    Print Publication Date
    2019-01-30
    Permanent link to this record
    http://hdl.handle.net/10754/629852
    
    Metadata
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    Abstract
    The optoelectronic and photocatalytic properties of a number of semiconductor materials, including halide perovskites, have recently been found to be facet-dependent. While methylammonium lead iodide (CH3NH3PbI3) perovskite – an important material for energy applications – has shown facet-dependent electronic properties as well, most studies on CH3NH3PbI3 perovskite were performed on rhombo-dodecahedral (or rhombic) single crystals with the (200) and (112) facets exposed. In contrast, less is known about the electronic properties, including mixed conductivity behavior and possible in-plane anisotropy, of the (002) facet. Thus, we report a facile method for the growth of cuboid crystals of CH3NH3PbI3 perovskite with the (002) and (110) facets exposed. Two-terminal devices fabricated on the (002) facet demonstrate significantly improved charge transport and optoelectronic characteristics compared to those on the (200) facet of typical rhombic crystals, including: reduced ion migration, low dark current, and temporally-stable high photocurrents. These desirable characteristics of cuboid crystals are linked to their favorable growth conditions and preferred facet orientations. Our results provide a guidance for utilizing facets and crystal growth to achieve more efficient in-plane halide perovskite devices.
    Citation
    Zhumekenov AA, Haque MA, Yin J, El-Zohry AM, Lee KJ, et al. (2018) Reduced ion migration and enhanced photoresponse in cuboid crystals of methylammonium lead iodide perovskite. Journal of Physics D: Applied Physics. Available: http://dx.doi.org/10.1088/1361-6463/aaefdf.
    Sponsors
    The authors gratefully acknowledge the funding support provided by King Abdullah University of Science and Technology (KAUST).
    Publisher
    IOP Publishing
    Journal
    Journal of Physics D: Applied Physics
    DOI
    10.1088/1361-6463/aaefdf
    Additional Links
    http://iopscience.iop.org/article/10.1088/1361-6463/aaefdf
    ae974a485f413a2113503eed53cd6c53
    10.1088/1361-6463/aaefdf
    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)

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