Polyfullerene electron transport materials for high-performance inverted perovskites cells

• Electron transport materials (ETMs) are important for the efficiency and stability of inverted perovskites solar cells. The widely used PCBM is prone to aggregation and migration in batteries, reducing battery stability.
  

• Polyfullerene (PFBS-C12) not only retains fullerene's good photoelectric properties, but it can also solve the aggregation problem of PCBM. After 1300 hours of continuous light irradiation, the polyfullerene-based blade-coated cell demonstrated a high efficiency of 23.2% and good stability, maintaining an initial efficiency of 96%. A 53.6 cm2 perovskite micromodule with an aperture efficiency of 18.9% was also developed. This study proposes a new approach to designing ETMs that not only retains the benefits of traditional fullerene molecules but also results in more stable perovskite solar cells.
  

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• Yin Junli, Shi Xiaoyu, and Wang Lingyuan et,al High-Performance Inverted Perovskite Solar Devices Enabled by a Polyfullerene Electron Transporting Material Angew. Chem.Int.Ed. (2022)
  DOI: 10.1002/anie.202210610
  https://onlinelibrary.wiley.com/doi/10.1002/anie.202210610