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    Metal Contact and Carrier Transport in Single Crystalline CH3NH3PbBr3 Perovskite

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    Type
    Article
    Authors
    Lin, Chun-Ho
    Li, Ting-You cc
    Cheng, Bin
    Liu, Changxu cc
    Yang, Chih-Wen cc
    Ke, Jr-Jian
    Wei, Tzu-Chiao
    Li, Lain-Jong cc
    Fratalocchi, Andrea cc
    He, Jr-Hau
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Material Science and Engineering Program
    PRIMALIGHT Research Group
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    OSR-2016-CRG5-3005
    FCC/1/3079-08-01
    Date
    2018-09-21
    Online Publication Date
    2018-09-21
    Print Publication Date
    2018-11
    Permanent link to this record
    http://hdl.handle.net/10754/628790
    
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    Abstract
    Organic-inorganic perovskites have arrived at the forefront of solar technology due to their impressive carrier lifetimes and superior optoelectronic properties. By having the cm-sized perovskite single crystal and employing device patterning techniques, and the transfer length method (TLM), we are able to get the insight into the metal contact and carrier transport behaviors, which is necessary for maximizing device performance and efficiency. In addition to the metal work function, we found that the image force and interface charge pinning effects also affect the metal contact, and the studied single crystal CH3NH3PbBr3 features Schottky barriers of 0.17 eV, 0.38 eV, and 0.47 eV for Au, Pt, and Ti electrodes, respectively. Furthermore, the surface charges lead to the thermally activated transport from 207 K to 300 K near the perovskite surface. In contrast, from 120 K to 207 K, the material exhibited three-dimensional (3D) variable range hopping (VRH) carrier transport behavior. Understanding these fundamental contact and transport properties of perovskite will enable future electronic and optoelectronic applications.
    Citation
    Lin C-H, Li T-Y, Cheng B, Liu C, Yang C-W, et al. (2018) Metal Contact and Carrier Transport in Single Crystalline CH3NH3PbBr3 Perovskite. Nano Energy. Available: http://dx.doi.org/10.1016/j.nanoen.2018.09.049.
    Sponsors
    This work was financially supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) (OSR-2016-CRG5-3005), KAUST solar center (FCC/1/3079-08-01), and KAUST baseline funding.
    Publisher
    Elsevier BV
    Journal
    Nano Energy
    DOI
    10.1016/j.nanoen.2018.09.049
    Additional Links
    https://www.sciencedirect.com/science/article/pii/S2211285518306931
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.nanoen.2018.09.049
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; PRIMALIGHT Research Group; Electrical Engineering Program; Material Science and Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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