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Silicon solar cells have been successfully used in large power plants. However, despite the efforts made for more than 50\u2009years, there has been no notable progress in the development of flexible silicon solar cells because of their rigidity<jats:sup>1\u20134<\/jats:sup>. Here we provide a strategy for fabricating large-scale, foldable silicon wafers and manufacturing flexible solar cells. A textured crystalline silicon wafer always starts to crack at the sharp channels between surface pyramids in the marginal region of the wafer. This fact enabled us to improve the flexibility of silicon wafers by blunting the pyramidal structure in the marginal regions. This edge-blunting technique enables commercial production of large-scale (&gt;240\u2009cm<jats:sup>2<\/jats:sup>), high-efficiency (&gt;24%) silicon solar cells that can be rolled similarly to a sheet of paper. The cells retain 100% of their power conversion efficiency after 1,000 side-to-side bending cycles. After being assembled into large (&gt;10,000\u2009cm<jats:sup>2<\/jats:sup>) flexible modules, these cells retain 99.62% of their power after thermal cycling between \u221270\u2009\u00b0C and 85\u2009\u00b0C for 120\u2009h. Furthermore, they retain 96.03% of their power after 20\u2009min of exposure to air flow when attached to a soft gasbag, which models wind blowing during a violent storm.<\/jats:p>","DOI":"10.1038\/s41586-023-05921-z","type":"journal-article","created":{"date-parts":[[2023,5,24]],"date-time":"2023-05-24T16:02:31Z","timestamp":1684944151000},"page":"717-723","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":283,"title":["Flexible solar cells based on foldable silicon wafers with blunted 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