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    Temperature-dependent excitonic photoluminescence of hybrid organometal halide perovskite films

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    Type
    Article
    Authors
    Wu, Kewei
    Bera, Ashok cc
    Ma, Chun
    Du, Yuanmin
    Yang, Yang
    Li, Liang
    Wu, Tao cc
    KAUST Department
    Advanced Nanofabrication, Imaging and Characterization Core Lab
    Core Labs
    Imaging and Characterization Core Lab
    KAUST Solar Center (KSC)
    Laboratory of Nano Oxides for Sustainable Energy
    Material Science and Engineering Program
    Physical Characterization
    Physical Science and Engineering (PSE) Division
    Date
    2014-09-17
    Permanent link to this record
    http://hdl.handle.net/10754/563239
    
    Metadata
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    Abstract
    Organometal halide perovskites have recently attracted tremendous attention due to their potential for photovoltaic applications, and they are also considered as promising materials in light emitting and lasing devices. In this work, we investigated in detail the cryogenic steady state photoluminescence properties of a prototypical hybrid perovskite CH3NH3PbI3-xClx. The evolution of the characteristics of two excitonic peaks coincides with the structural phase transition around 160 K. Our results further revealed an exciton binding energy of 62.3 ± 8.9 meV and an optical phonon energy of 25.3 ± 5.2 meV, along with an abnormal blue-shift of the band gap in the high-temperature tetragonal phase. This journal is
    Citation
    Wu, K., Bera, A., Ma, C., Du, Y., Yang, Y., Li, L., & Wu, T. (2014). Temperature-dependent excitonic photoluminescence of hybrid organometal halide perovskite films. Phys. Chem. Chem. Phys., 16(41), 22476–22481. doi:10.1039/c4cp03573a
    Sponsors
    This work is supported by King Abdullah University of Science and Technology (KAUST).
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Phys. Chem. Chem. Phys.
    DOI
    10.1039/c4cp03573a
    PubMed ID
    25247715
    ae974a485f413a2113503eed53cd6c53
    10.1039/c4cp03573a
    Scopus Count
    Collections
    Articles; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; KAUST Solar Center (KSC)

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