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However, the mechanical stability of inherently brittle perovskite, due to residual lattice stress and ductile fracture formation, poses significant challenges to the long\u2010term photovoltaic performance and device lifetime. In this paper, to address this issue, a dynamic \u201cligament\u201d composed of supramolecular poly(dimethylsiloxane) polyurethane (DSSP\u2010PPU) is introduced into the grain boundaries of the PSCs, facilitating the release of residual stress and softening of the grain boundaries. Remarkably, this dynamic \u201cligament\u201d exhibits excellent self\u2010healing properties and enables the healing of cracks in perovskite films at room temperature. The obtained PSCs have achieved power conversion efficiencies of 23.73% and 22.24% for rigid substrates and flexible substrates, respectively, also 17.32% for flexible mini\u2010modules. Notably, the F\u2010PSCs retain nearly 80% of their initial efficiency even after subjecting the F\u2010PSCs to 8000 bending cycles (<jats:italic>r<\/jats:italic> = 2 mm), which can further recover to almost 90% of the initial efficiency through the self\u2010healing process. This remarkable improvement in device stability and longevity holds great promise for extending the overall lifetime of F\u2010PSCs.<\/jats:p>","DOI":"10.1002\/smll.202307186","type":"journal-article","created":{"date-parts":[[2023,10,20]],"date-time":"2023-10-20T02:42:02Z","timestamp":1697769722000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":46,"title":["Supramolecular Polyurethane \u201cLigaments\u201d Enabling Room\u2010Temperature Self\u2010Healing Flexible Perovskite Solar Cells and Mini\u2010Modules"],"prefix":"10.1002","volume":"20","author":[{"given":"Zhengchi","family":"Yang","sequence":"first","affiliation":[{"name":"Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics South China Normal University  Guangzhou 510006 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yue","family":"Jiang","sequence":"additional","affiliation":[{"name":"Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics South China Normal University  Guangzhou 510006 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuqi","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics South China Normal University  Guangzhou 510006 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gu","family":"Li","sequence":"additional","affiliation":[{"name":"Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics South China Normal University  Guangzhou 510006 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Quanwen","family":"You","sequence":"additional","affiliation":[{"name":"Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics South China Normal University  Guangzhou 510006 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhen","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics South China Normal University  Guangzhou 510006 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xingsen","family":"Gao","sequence":"additional","affiliation":[{"name":"Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics South China Normal University  Guangzhou 510006 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xubing","family":"Lu","sequence":"additional","affiliation":[{"name":"Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Academy of Advanced Optoelectronics South China Normal University  Guangzhou 510006 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinbo","family":"Shi","sequence":"additional","affiliation":[{"name":"Chain Walking New Material Technology (Guangzhou) Co. 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