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However, their inherent asynchronous crystallization triggers severe morphological inhomogeneity and generates a high defect density, which limits the performance and long\u2010term stability of devices. Unlike conventional Lewis base strategies that predominantly focus on direct bonding effects for simple defect passivation, we propose a strategy for precursor colloidal regulation mediated by aromatic conjugated hydrazide derivatives. Extending the conjugation length of the hydrazide molecular framework established preferential coordination interactions between the additive and SnI\n                    <jats:sub>2<\/jats:sub>\n                    precursor. This preferential complexation alleviated the aggregation of perovskite clusters and inhibited the rapid precipitation of Sn species, while simultaneously suggesting a lowered apparent heterogeneous nucleation energy barrier on the substrate. This approach achieved uniform and balanced Sn\/Pb crystallization kinetics, which enabled the formation of compact, pinhole\u2010free perovskite films. The optimal device modified with 2\u2010naphthoylhydrazine delivered a power conversion efficiency of 24.16%, along with significantly enhanced operational stability, which retained 88.2% of its initial efficiency after 1200\u00a0h of continuous illumination. This work offers novel insights into precisely regulating the crystallization of narrow\u2010bandgap Sn\u2010Pb perovskites to enable the development of efficient and stable perovskite photovoltaics.\n                  <\/jats:p>","DOI":"10.1002\/anie.5170209","type":"journal-article","created":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T03:35:08Z","timestamp":1788924908000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Conjugated Hydrazide\u2010Mediated Precursor Coordination Regulation Enables Uniform Crystallization of Tin\u2010Lead Perovskites"],"prefix":"10.1002","author":[{"given":"Wei","family":"Tan","sequence":"first","affiliation":[{"name":"College of Chemistry and Molecular Engineering Qingdao University of Science and Technology  Qingdao P. R. 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