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Organic Ionic Plastic Crystals: A Promising Additive for Achieving Efficient and Stable Cspbi2br Perovskite Solar Cells

SSRN Electronic Journal
  • 9
    Citations
  • 204
    Usage
  • 0
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    9
    • Citation Indexes
      9
  • Usage
    204
    • Abstract Views
      165
    • Downloads
      39

Article Description

We firstly report an organic ionic plastic crystals additive, 1,1'-Spirobipyrrolidinium hexafluoride (SBP + PF 6 - ), to increase the power conversion efficiency and improve the stability by adjusting the crystallization of the perovskite light-absorbing layer and passivating the pinhole defects at the grain boundary. The detailed results reveal that PF 6 - molecular anions can fill the vacancy in the X-site and passivate the interface defects. Moreover, SBP + with high conductivity can be used to regulate A-site defects. The results show that the SBP + PF 6 - modified device exhibits a champion efficiency of 13.20%, enhanced by 19% than that of the control device. This work proposes not only a straightforward strategy to control the crystallization process in CsPbI 2 Br perovskite-based solar cells but also the functionality of organic ionic plastic crystals additive for chemical bonding and defects passivation to improve efficiency and stability.

Bibliographic Details

Chen Wang; Boxue Zhang; Xiaohui Ma; Liqun Yang; Xueni Shang; Cong Chen

Elsevier BV

Organic ionic plastic; defect passivation; Stability; inorganic

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