Recently, the team of assistant professor Ke Xiao, and professor Hairen Tan at Nanjing University, in collaboration with Renshine Solar, made a major advance in commercial meter-scale perovskite solar modules. By engineering a ternary solvent system (2-methoxyethanol/1,3-dioxolane/dimethyl sulfoxide) combined with vacuum-assisted crystallization, spontaneously formed a formamidinium-iodide enriched "protective base layer" on the perovskite film surface. Subsequently employing chemically stable lead carboxylates as a surface passivator, the researchers achieved certified power conversion efficiencies of 24.0% for an 810 cm2 aperture-area module and 22.0% for a 0.72 m2 total-area module, setting a new efficiency record for meter-scale perovskite solar modules. Moreover, the modules passed the full sequence of IEC 61215/IEC 61730 reliability tests, marking a critical step forward in the commercialization of perovskite photovoltaic technology, representing the highest reported performance for scalable, industrially viable perovskite photovoltaics. The results were published online in Nature on August 12, 2026, under the title "Lead carboxylates passivation for meter-scale perovskite solar modules".
Source: https://www.nature.com/articles/10.1038/s41586-026-10994-7
