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    Role of Compositional Tuning on Thermoelectric Parameters of Hybrid Halide Perovskites

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    Type
    Article
    Authors
    Haque, Mohammed
    Nugraha, Mohamad Insan
    Paleti, Sri Harish Kumar
    Baran, Derya cc
    KAUST Department
    KAUST Solar Center
    KAUST Solar Center (KSC)
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    OSR-CRG2018-3737
    Date
    2019-05-31
    Online Publication Date
    2019-05-31
    Print Publication Date
    2019-06-20
    Embargo End Date
    2020-05-31
    Permanent link to this record
    http://hdl.handle.net/10754/656055
    
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    Abstract
    Halide perovskites are emerging as a new class of materials for thermoelectric applications owing to their low thermal conductivity and high Seebeck coefficient (thermopower). In this work, the thermoelectric parameters of vapor-deposited hybrid perovskite thin films are explored for the first time. We establish a relationship between the chemical composition and thermoelectric properties of sequentially vapor-deposited CH3NH3PbI3 films. A composition-dependent grain size and in-plane electrical conductivity evolution is observed and its influence on thermoelectric properties is analyzed. An ultralow in-plane thermal conductivity of 0.32 ± 0.03 W m–1 K–1 at room temperature is recorded for CH3NH3PbI3 using a chip-based 3ω method. Thermal conductivity measurement of a series of CH3NH3PbI3 films reveals that the thermal transport is governed by the Pb–I lattice at room temperature. Furthermore, n- and p-type CH3NH3PbI3 films achieved by compositional tuning exhibit high negative (6500 μV/K) and positive (5500 μV/K) thermopower.
    Citation
    Haque, M. A., Nugraha, M. I., Paleti, S. H. K., & Baran, D. (2019). Role of Compositional Tuning on Thermoelectric Parameters of Hybrid Halide Perovskites. The Journal of Physical Chemistry C, 123(24), 14928–14933. doi:10.1021/acs.jpcc.9b02830
    Sponsors
    This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award no. OSR-CRG2018-3737.
    Publisher
    American Chemical Society (ACS)
    Journal
    The Journal of Physical Chemistry C
    DOI
    10.1021/acs.jpcc.9b02830
    Additional Links
    http://pubs.acs.org/doi/10.1021/acs.jpcc.9b02830
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.jpcc.9b02830
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; KAUST Solar Center (KSC)

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