Vapor-assisted surface reconstruction enables outdoor-stable perovskite solar modules.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 40440383.
- Also identified by DOI 10.1126/science.adv4280.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Natural illumination variations in light-dark cycles induce irreversible ion migration in perovskite solar cells, posing substantial challenges to their long-term outdoor operational stability. We addressed this issue by isolating defective octahedra at the perovskite surface using a vapor-deposited polydentate ligand. Surface octahedra isolation suppresses ion migration into the charge transport layer and reduces surface ionic defects, modulating the kinetics of ion migration during light-dark cycles. Our 785-square-centimeter industrial-scale perovskite solar modules achieved a power conversion efficiency (PCE) of 19.6%. Our modules demonstrated enhanced diurnal stability, retaining more than 97% of their initial PCE even after 101 light-dark cycles at 50°C. Our perovskite modules maintained stable power output during 45 days of outdoor operation under severe summer conditions, exhibiting stability comparable with that of the reference silicon cell.