摘要：Trap-mediated energy loss in the buried interface with non-exposed feature constitutes one of the serious challenges for achieving high-performance perovskite solar cells(PSCs).Inspired by the adhesion mechanism of mussels,herein,three catechol derivatives with functional Lewis base groups,namely 3,4-Dihydroxyphenylalanine(DOPA),3,4-Dihydroxyphenethylamine(DA)and 3-(3,4-Dihydroxyphenyl)propionic acid(DPPA),were strategically *** molecules as interfacial linkers are incorporated into the buried interface between perovskite and SnO_(2) surface,achieving bilateral synergetic passivation *** crosslinking can produce secondary bonding with the undercoordinated Pb^(2+) and Sn^(4+) *** PSCs treated with DOPA exhibited the best performance and operational *** the DOPA passivation,a stabilized power conversion efficiency(PCE)of 21.5%was demonstrated for the planar *** 55 days of room-temperature storage,the unencapsulated devices with the DOPA crosslinker could still maintain 85%of their initial performance in air under relative humidity of-15%.This work opens up a new strategy for passivating the buried interfaces of perovskite photovoltaics and also provides important insights into designing defect passivation agents for other perovskite optoelectronic devices,such as light-emitting diodes,photodetectors,and lasers.