articleAngewandte Chemie International EditionMar 4, 2022Closed access

Temperature‐Reliable Low‐Dimensional Perovskites Passivated Black‐Phase CsPbI 3 toward Stable and Efficient Photovoltaics

STShan TanBYBingcheng YuYCYuqi CuiFMFanqi MengCHChunjie Huang

Beijing National Laboratory for Molecular Sciences · FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic · +7 more institutions

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Abstract

Abstract Low‐dimensional (LD) perovskites can effectively passivate and stabilize 3D perovskites for high‐performance perovskite solar cells (PSCs). Regards CsPbI 3 ‐based PSCs, the influence of high‐temperature annealing on the LD perovskite passivation effect has to be taken into account due to fact the black‐phase CsPbI 3 crystallization requires high‐temperature treatment, however, which has been rarely concerned so far. Here, the thermal stability of LD perovskites based on three hydrophobic organic ammonium salts and their passivation effect toward CsPbI 3 and the whole device performance, have been investigated. It is found that, phenyltrimethylammonium iodide (PTAI) and its corresponding LD perovskites…

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Topics & keywords

Topics
Keywords
  • Passivation
  • Perovskite (structure)
  • Thermal stability
  • Materials science
  • Photovoltaics
  • Iodide
  • Annealing (glass)
  • Phase (matter)
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