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Thiophene\u2010benzene\u2010thiophene central unit\u2010based acceptors possess the advantage of low synthetic cost, while their power conversion efficiency (PCE) is relatively low. Here, by incorporating a\n                    <jats:italic>para<\/jats:italic>\n                    \u2010substituted benzene unit and 1\n                    <jats:sup>st<\/jats:sup>\n                    \u2010position branched alkoxy chains with large steric hindrance, a completely non\u2010fused non\u2010fullerene acceptor, TBT\u201026, was designed and synthesized. The narrow band gap of 1.38\u2005eV ensures the effective utilization of sunlight. The favorable phase separation morphology of TBT\u201026\u2010based blend film facilitates the efficient exciton dissociation and charge transport in corresponding OPV cell. Therefore, the TBT\u201026\u2010based small\u2010area cell achieves an impressive PCE of 17.0\u2009%, which is the highest value of completely non\u2010fused OPV cells. Additionally, we successfully demonstrated the scalability of this design by fabricating a 28.8\u2005cm\n                    <jats:sup>2<\/jats:sup>\n                    module with a high PCE of 14.3\u2009%. Overall, our work provides a practical molecular design strategy for developing high\u2010performance and low\u2010cost acceptors, paving the way for industrial applications of OPV technology.\n                  <\/jats:p>","DOI":"10.1002\/anie.202403753","type":"journal-article","created":{"date-parts":[[2024,3,24]],"date-time":"2024-03-24T23:29:11Z","timestamp":1711322951000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":52,"title":["Completely Non\u2010Fused Low\u2010Cost Acceptor Enables Organic Photovoltaic Cells with 17\u2009% Efficiency"],"prefix":"10.1002","volume":"63","author":[{"given":"Ni","family":"Yang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences  Beijing 100190 China"},{"name":"University of Chinese Academy of Sciences  Beijing 100049 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