• • Industrial-scale PSM (785 cm2) achieved PCE of 19.6% and projected T80 >6.7 years under light-dark cycling, rivaling silicon stability.
• • Surface treatment with terpyridine (Tpy) forms 0D (Tpy)2PbI6, increasing ion migration activation energy from 0.43 to 0.68 eV, suppressing irreversible degradation.
• • Treated films show PL lifetime of 532.6 ns and trap density of 1.57×10^15 cm−3, enabling small-area PCE of 25.3%.
• • Outdoor operation for 45 days showed stability comparable to commercial silicon solar cells, validating real-world durability.