Record‐Efficiency Flexible Perovskite Solar Cells Enabled by Multifunctional Organic Ions Interface Passivation

Abstract Flexible perovskite solar cells (f‐PSCs) have attracted great attention because of their unique advantages in lightweight and portable electronics applications. However, their efficiencies are far inferior to those of their rigid counterparts. Herein, a novel histamine diiodate (HADI) is designed based on theoretical study to modify the SnO 2 /perovskite interface. Systematic experimental results reveal that the HADI serves effectively as a multifunctional agent mainly in three aspects: 1) surface modification to realign the SnO 2 conduction band upward to improve interfacial charge extraction; 2) passivating the buried perovskite surface, and 3) bridging between the SnO 2 and perovskite layers for…

• NN
  National Natural Science Foundation of China

  Award: 62074095
• HE
  Higher Education Discipline Innovation Project
• NK
  National Key Research and Development Program of China

  Award: 2016YFA0202403
• FR
  Fundamental Research Funds for the Central Universities

  Award: GK202002001