Within the hierarchical framework of high-performance perovskite solar cells, the molecular contact interface plays a pivotal role in both charge extraction and structural integrity. Positioned in direct contact with the perovskite photoactive layer, its chemical composition and uniformity in film formation are key determinants of carrier selectivity and device durability. Nevertheless, the molecular contact layers commonly employed are susceptible to orientation reorganization and aggregation during the processes of solution deposition and thermal annealing. This susceptibility results in inconsistent interface coverage, impeding lateral charge transport. Moreover, it exacerbates challenges such as carrier recombination, ion migration, and chemical detachment over extended operational periods, posing significant obstacles to enhancing device efficiency and longevity.
