Tailoring Buried Interface and Minimizing Energy Loss Enable Efficient Narrow and Wide Bandgap Inverted Perovskite Solar Cells by Aluminum Glycinate Based Organometallic Molecule

Abstract Rational regulation of Me‐4PACz/perovskite interface has emerged as a significant challenge in the pursuit of highly efficient and stable perovskite solar cells (PSCs). Herein, an organometallic molecule of aluminum glycinate (AG) that contained amine (‐NH 2 ) and aluminum hydroxyl (Al‐OH) groups is developed to tailor the buried interface and minimize interface‐driven energy losses. The Al‐OH groups selectively bonded with unanchored O═P‐OH and bare NiO‐OH to optimize the surface morphology and energy levels, while the ‐NH 2 group interacted specifically with Pb 2+ to retard perovskite crystallization, passivate buried Pb‐related defects, and release residual interface stress. These interactions…

• NN
  National Natural Science Foundation of China

  Awards: 22379101, 62204148
• NK
  National Key Research and Development Program of China

  Award: 2022YFB4200500