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    Wide and Tunable Bandgap MAPbBr3-xClx Hybrid Perovskites with Enhanced Phase Stability: In Situ Investigation and Photovoltaic Devices

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    solr.202000718.pdf
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    1.416Mb
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    Description:
    Accepted Article
    Embargo End Date:
    2022-02-17
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    Type
    Article
    Authors
    Tang, Ming-Chun
    Dang, Hoang X.
    Lee, Sehyun
    Barrit, Dounya cc
    Munir, Rahim cc
    Wang, Kai
    Li, Ruipeng
    Smilgies, Detlef-M.
    De Wolf, Stefaan cc
    Kim, Dong-Yu
    Anthopoulos, Thomas D. cc
    Amassian, Aram cc
    KAUST Department
    Material Science and Engineering Program
    Material Science and Engineering
    Physical Science and Engineering (PSE) Division
    KAUST Solar Center (KSC), and Physical Science and Engineering Division (PSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
    KAUST Solar Center (KSC)
    Office of the VP
    Academic Affairs
    Date
    2021-02-17
    Embargo End Date
    2022-02-17
    Submitted Date
    2020-11-14
    Permanent link to this record
    http://hdl.handle.net/10754/667525
    
    Metadata
    Show full item record
    Abstract
    Our current understanding of the crystallization, morphology evolution and phase stability of wide bandgap hybrid perovskite thin films is very limited, as much of the community's focus has been on lower bandgap systems. Here, we investigate the crystallization behavior and film formation of wide and tunable bandgap MAPbBr3-xClx films and contrast its formation and phase stability to the classical MAPbI3-xBrx cases. We utilize a multi-probe in situ characterization approach consisting of synchrotron-based grazing incidence wide-angle X-ray scattering and lab-based time-resolved UV-Vis absorbance measurements to show that all wide-bandgap perovskite compositions of MAPbBr3-xClx studied (0 < × < 3) crystallized the same way: the perovskite phase forms directly from the colloidal sol state, and forms a solid film in the cubic structure. This results in significantly improved phase stability of these compounds compared to MAPbI3-xBrx systems. The phase transformation pathway is direct and excludes solvated phases, in contrast to MAPbI3. The films benefit from antisolvent dripping to overcome the formation of discontinuous layers and enable device integration. Pin-hole-free MAPbBr3-xClx hybrid perovskite thin films with tunable bandgap are thus integrated into working single-junction solar cell devices and achieve tunable open-circuit voltage as high as 1.6 V.
    Citation
    Tang, M.-C., Dang, H. X., Lee, S., Barrit, D., Munir, R., Wang, K., … Amassian, A. (2021). Wide and Tunable Bandgap MAPbBr 3-x Cl x Hybrid Perovskites with Enhanced Phase Stability: In Situ Investigation and Photovoltaic Devices. Solar RRL. doi:10.1002/solr.202000718
    Publisher
    Wiley
    Journal
    Solar RRL
    DOI
    10.1002/solr.202000718
    Additional Links
    https://onlinelibrary.wiley.com/doi/10.1002/solr.202000718
    ae974a485f413a2113503eed53cd6c53
    10.1002/solr.202000718
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; KAUST Solar Center (KSC)

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