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20% Efficient Perovskite Solar Cells with 2D Electron Transporting Layer

Zhao, Xiaojuan et al.

Advanced functional materials. Volume 29:Number 4 (2019); pp n/a-n/a -- Wiley-VCH Verlag

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  • Title:
    20% Efficient Perovskite Solar Cells with 2D Electron Transporting Layer
  • Author: Zhao, Xiaojuan;
    Liu, Shuangshuang;
    Zhang, Haitao;
    Chang, Sheng‐Yung;
    Huang, Wenchao;
    Zhu, Bowen;
    Shen, Yan;
    Shen, Cai;
    Wang, Deyu;
    Yang, Yang;
    Wang, Mingkui
  • Found In: Advanced functional materials. Volume 29:Number 4 (2019); pp n/a-n/a
  • Journal Title: Advanced functional materials
  • Subjects: Chemical vapor deposition--Periodicals; Materials--Periodicals; defect physics--exciton--perovskite solar cell--stability--substitution; Dewey: 620.11
  • Rights: legaldeposit
  • Publication Details: Wiley-VCH Verlag
  • Abstract: Abstract:

    Herein, a 2D SnS2electron transporting layer is reported via self‐assembly stacking deposition for highly efficient planar perovskite solar cells, achieving over 20% power conversion efficiency under AM 1.5 G 100 mW cm −2 light illumination. To the best of the authors' knowledge, this represents the highest efficiency that has so far been reported for perovskite solar cells using a 2D electron transporting layer. The large‐scaled 2D multilayer SnS2sheet structure triggers a heterogeneous nucleation over the perovskite precursor film. The intermolecular Pb⋅⋅⋅S interactions between perovskite and SnS2could passivate the interfacial trap states, which suppress charge recombination and thus facilitate electron extraction for balanced charge transport at interfaces between electron transporting layer/perovskite and hole transporting layer/perovskite. This work demonstrates that 2D materials have great potential for high‐performance perovskite solar cells.

    Abstract :

    Large‐scaled sheet structured 2D multilayer SnS2triggers heterogeneous nucleation over the perovskite precursor film, bringing in balanced electron and hole transport at interfaces between electron transporting layers/perovskite and perovskite/hole transporting layer, and suppressing interfacial charge recombination, achieving the highest 20.12% power conversion efficiency that has so far been reported for perovskite solar cells using a 2D electron transporting layer.


  • Identifier: System Number: LDEAvdc_100077167652.0x000001; Journal ISSN: 1616-301X; 10.1002/adfm.201805168
  • Publication Date: 2019
  • Physical Description: Electronic
  • Shelfmark(s): ELD Digital store

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