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Compositional Investigation for Bandgap Engineering of Wide Bandgap Triple Cation Perovskite

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    Compositional Investigation for Bandgap Engineering of Wide Bandgap Triple Cation Perovskite
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    • Jacopo Sala*
      Jacopo Sala
      Thin-Film PV, imec−Partner in EnergyVille and Solliance, Thor Park 8320, 3600 Genk, Belgium
      Department of Electrical Engineering, KU Leuven, 3000 Leuven, Belgium
      *E-mail: [email protected]
      More by Jacopo Sala
      Orcidhttps://orcid.org/0000-0002-9958-8611
    • Maryamsadat Heydarian
      Maryamsadat Heydarian
      Thin-Film PV, imec−Partner in EnergyVille and Solliance, Thor Park 8320, 3600 Genk, Belgium
      More by Maryamsadat Heydarian
    • Stijn Lammar
      Stijn Lammar
      Thin-Film PV, imec−Partner in EnergyVille and Solliance, Thor Park 8320, 3600 Genk, Belgium
      Department of Electrical Engineering, KU Leuven, 3000 Leuven, Belgium
      More by Stijn Lammar
    • Yaser Abdulraheem
      Yaser Abdulraheem
      Department of Electrical Engineering, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait
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    • Tom Aernouts
      Tom Aernouts
      Thin-Film PV, imec−Partner in EnergyVille and Solliance, Thor Park 8320, 3600 Genk, Belgium
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    • Afshin Hadipour
      Afshin Hadipour
      Thin-Film PV, imec−Partner in EnergyVille and Solliance, Thor Park 8320, 3600 Genk, Belgium
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    • Jef Poortmans
      Jef Poortmans
      Thin-Film PV, imec−Partner in EnergyVille and Solliance, Thor Park 8320, 3600 Genk, Belgium
      Department of Electrical Engineering, KU Leuven, 3000 Leuven, Belgium
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    ACS Applied Energy Materials

    Cite this: ACS Appl. Energy Mater. 2021, 4, 7, 6377–6384
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    https://doi.org/10.1021/acsaem.1c00810
    Published July 9, 2021
    Copyright © 2021 American Chemical Society
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    Abstract

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    Perovskite solar cells have shown their potential for multijunction applications due to their tunable bandgap. This research focuses on triple cation (3C) wide bandgap perovskites ranging from 1.6 to 1.76 eV, an ideal bandgap choice for 2-terminal tandems. The bandgap is changed via the X-site substitution of iodine (I) with bromine (Br) and via cation substitution, with various concentrations of cesium (Cs), methylammonium (MA), and formamidinium (FA). As a result, it is seen that cation engineering is a viable solution to fine-tune the bandgap and prevent a photoinduced segregation. Moreover, a champion efficiency of 18.3% is reported with a 1.67 eV bandgap.

    Copyright © 2021 American Chemical Society

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    ACS Applied Energy Materials

    Cite this: ACS Appl. Energy Mater. 2021, 4, 7, 6377–6384
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acsaem.1c00810
    Published July 9, 2021
    Copyright © 2021 American Chemical Society
    Request reuse permissions

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