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However, further efficiency advancement is critically constrained by a fundamental trade\u2011off between achieving ordered molecular packing for efficient charge transport and maintaining high photoluminescence quantum yield (PLQY) for suppressed non\u2011radiative recombination loss (\n                    <jats:italic>E<\/jats:italic>\n                    <jats:sub>nr<\/jats:sub>\n                    ). In this study, for the first time, we propose a stepwise multidimensional asymmetry engineering to overcome the dilemma and develop three DMAs with progressively increasing asymmetry, namely symmetric C1, mono\u2011asymmetric C2, and dual\u2011asymmetric C3. As asymmetric dimension increases, molecular dipole gradually rotates from perpendicular direction for C1 to tilt direction for C2, then to nearly in\u2011plane for C3, inducing slipped J\u2011aggregation of C3 with slightly loosened stacking yet enhanced crystal coherence length, which is conducive to efficient charge transport. Meanwhile, among these DMAs, dual\u2011asymmetric C3 exhibits the most suppressed backbone vibrations due to enhanced molecular rigidity, leading to the highest PLQY and thus the lowest\n                    <jats:italic>E<\/jats:italic>\n                    <jats:sub>n<\/jats:sub>\n                    <jats:sub>r<\/jats:sub>\n                    . Consequently, PM6:C3 device achieves a top\u2010level efficiency of 19.87%, outperforming the PM6:C1 (17.88%) and PM6:C2 (18.54%) counterparts. Moreover, D18:L8\u2010BO:C3 device delivers a remarkable PCE of 20.64%. This work demonstrates that multidimensional asymmetric engineering simultaneously enables ordered molecular packing and high PLQY for high\u2011performance DMAs.\n                  <\/jats:p>","DOI":"10.1002\/anie.4282350","type":"journal-article","created":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T03:37:48Z","timestamp":1789616268000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Stepwise Multidimensional Asymmetric Design of Dimeric Acceptors Enables Simultaneous Ordered Packing and High PLQY for High\u2010Efficiency Organic Solar Cells"],"prefix":"10.1002","author":[{"given":"Xiaohui","family":"Ouyang","sequence":"first","affiliation":[{"name":"College of Chemistry and Engineering\/Film Energy Chemistry for Jiangxi Provincial Key Laboratory (FEC) Nanchang University  Nanchang P. R. 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