articleNatureNov 1, 2023HYBRID OA

Homogenizing out-of-plane cation composition in perovskite solar cells

ZLZheng LiangYZYong ZhangHXHuifen XuWCWenjing ChenBLBoyuan Liu

University of Science and Technology of China · Chinese Academy of Sciences · +16 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

Abstract Perovskite solar cells with the formula FA 1− x Cs x PbI 3 , where FA is formamidinium, provide an attractive option for integrating high efficiency, durable stability and compatibility with scaled-up fabrication. Despite the incorporation of Cs cations, which could potentially enable a perfect perovskite lattice 1,2 , the compositional inhomogeneity caused by A-site cation segregation is likely to be detrimental to the photovoltaic performance of the solar cells 3,4 . Here we visualized the out-of-plane compositional inhomogeneity along the vertical direction across perovskite films and identified the underlying reasons for the inhomogeneity and its potential impact for devices. We devised a strategy…

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Topics & keywords

Topics
Keywords
  • Formamidinium
  • Perovskite (structure)
  • Fabrication
  • Perovskite solar cell
  • Photovoltaic system
  • Materials science
  • Energy conversion efficiency
  • Chemical engineering
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