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However, the defect\u2010induced non\u2010radiative recombination losses, low charge extraction efficiency, energy level mismatches, and so on render the fabrication of high\u2010efficiency inverted IPSCs remains challenging. Here, the use of 3\u2010amino\u20105\u2010bromopyridine\u20102\u2010formamide (ABF) in methanol was dynamically spin\u2010coated on the surface of CsPbI<jats:sub>2.85<\/jats:sub>Br<jats:sub>0.15<\/jats:sub> film, which facilitates the limited etching of defect\u2010rich subsurface layer, resulting in the formation of vertical PbI<jats:sub>2<\/jats:sub> nanosheet structures. This enabled localized contacts between the perovskite film and the electron transport layer, suppress the recombination of electron\u2010hole and beneficial to electron extraction. Additionally, the C=O and C=N groups in ABF effectively passivated the undercoordinated Pb<jats:sup>2+<\/jats:sup> at grain boundaries and on the surface of CsPbI<jats:sub>2.85<\/jats:sub>Br<jats:sub>0.15<\/jats:sub> film. Eventually, we achieved a champion efficiency of 20.80\u2009% (certified efficiency of 20.02\u2009%) for inverted IPSCs with enhanced stability, which is the highest value ever reported to date. Furthermore, we successfully prepared p\u2010i\u2010n type monolithic inorganic perovskite\/silicon tandem solar cells (IPSTSCs) with an efficiency of 26.26\u2009%. This strategy provided both fast extraction and efficient passivation at the electron\u2010selective interface.<\/jats:p>","DOI":"10.1002\/anie.202400018","type":"journal-article","created":{"date-parts":[[2024,2,24]],"date-time":"2024-02-24T02:58:56Z","timestamp":1708743536000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Nanoscale Local Contacts Enable Inverted Inorganic Perovskite Solar Cells with 20.8\u2009% Efficiency"],"prefix":"10.1002","volume":"63","author":[{"given":"Sanlong","family":"Wang","sequence":"first","affiliation":[{"name":"Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center National Key Laboratory of Photovoltaic Materials and Solar Cells Nankai University  Tianjin China 300350"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shanshan","family":"Qi","sequence":"additional","affiliation":[{"name":"Institute of 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