Mixed perovskite based on methyl-ammonium and polymeric-ammonium for stable and reproducible solar cells

We have described the compositional engineering of mixed perovskite based on methyl-and polymeric-ammonium. The resulting perovskite films containing moisture-resistant 2D materials exhibit a maximum power conversion efficiency of over 15% with high reproducibility and good stability, offering greater tunability at the molecular level for material optimization.