Researchers from China have developed a novel approach to improve the performance of co-deposited inverted perovskite solar cells by addressing the issue of self-aggregation of self-assembled molecules (SAMs). They designed an asymmetric SAM, PhBr-4PACz, to suppress aggregation and promote SAM accumulation at the bottom interface, enhancing adhesion and coverage. Additionally, they introduced a grain-boundary crosslinking additive, AVIMCl, to improve device stability by suppressing SAM diffusion. The research resulted in a certified power conversion efficiency of 27.03% in co-deposited inverted devices, the highest reported for this architecture to date. The approach also demonstrated versatility by achieving high efficiencies on different substrates and device architectures. Chen and his team are working on a co-deposition strategy to improve the efficiency of solar modules by suppressing SAM diffusion and optimizing crosslinking, with plans to scale this strategy to large-area modules and adapt it to industrial coating techniques. Collaboration with scientists from Shanghai Jiao Tong University and Shandong Normal University contributed to the study, aiming to increase open-circuit voltage and reduce recombination losses through further optimization of the SAM and crosslinker.