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Notably, we first observe that the aging phenomenon is more severe in the precursor of two\u2010step sequential method compared to that in one\u2010step method due to that the protic solvent isopropanol facilitates amine\u2010cation side reaction and iodide ions oxidation. Herein, we report a novel approach for selectively stabilizing both organic amine salt and lead iodide (PbI\n                    <jats:sub>2<\/jats:sub>\n                    ) precursor solutions in two\u2010step method. The introduction of benzene\u20101,3\u2010dithiol into organic amine salt solution can mitigate amine\u2010cation side reactions due to the formation of an acidic and reducing environment. Simultaneously, decamethylferrocene (FcMe\n                    <jats:sub>10<\/jats:sub>\n                    \/FcMe\n                    <jats:sup>+<\/jats:sup>\n                    <jats:sub>10<\/jats:sub>\n                    ) pair can act as a redox shuttle in PbI\n                    <jats:sub>2<\/jats:sub>\n                    solution to concurrently oxidize Pb\n                    <jats:sup>0<\/jats:sup>\n                    and reduce I\n                    <jats:sub>2<\/jats:sub>\n                    in cyclic manner. Consequently, the PVSCs device fabricated from ameliorative precursor solutions demonstrates superior power conversion efficiency of 25.31\u2009%, retaining 95\u2009% of its efficiency after 21\u2005days of solution aging. Moreover, the unencapsulated devices maintain 85\u2009% of primitive efficiency for 1500\u2005h at maximum power point tracking under continuous illumination. This work establishes a fundamental guidance and scientific direction for the stabilization of two\u2010step perovskite precursor solutions.\n                  <\/jats:p>","DOI":"10.1002\/anie.202411708","type":"journal-article","created":{"date-parts":[[2024,9,14]],"date-time":"2024-09-14T10:08:47Z","timestamp":1726308527000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Extending Shelf\u2010Life of Two\u2010Step Method Precursor Solutions through Targeted Regulation for Highly Efficient and Reproducible Perovskite Solar Cells"],"prefix":"10.1002","volume":"63","author":[{"given":"Jiajun","family":"Ye","sequence":"first","affiliation":[{"name":"College of Chemistry and Chemical Engineering\/ Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC) Nanchang University  999\u2005Xuefu Avenue 330031 Nanchang 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Institute of Optoelectronics  60\u2005Chongzhou Avenue 226010 Nantong China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4709-7623","authenticated-orcid":false,"given":"Yiwang","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering\/ Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC) Nanchang University  999\u2005Xuefu Avenue 330031 Nanchang China"},{"name":"Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education Jiangxi Normal University  99\u2005Ziyang Avenue 330022 Nanchang China"},{"name":"College of Chemistry and Chemical Engineering Gannan Normal University  341000 Ganzhou China"},{"name":"Peking University Yangtze Delta Institute of Optoelectronics  60\u2005Chongzhou Avenue 226010 Nantong 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