{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T10:45:07Z","timestamp":1791888307113,"version":"4.3.4"},"reference-count":52,"publisher":"Wiley","issue":"57","license":[{"start":{"date-parts":[[2026,8,11]],"date-time":"2026-08-11T00:00:00Z","timestamp":1786406400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,8,11]],"date-time":"2026-08-11T00:00:00Z","timestamp":1786406400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["62275057"],"award-info":[{"award-number":["62275057"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004607","name":"Natural Science Foundation of Guangxi Province","doi-asserted-by":"publisher","award":["2023GXNSFFA026004"],"award-info":[{"award-number":["2023GXNSFFA026004"]}],"id":[{"id":"10.13039\/501100004607","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["2020R1A2C3004477"],"award-info":[{"award-number":["2020R1A2C3004477"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small"],"published-print":{"date-parts":[[2026,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>The performance of organic solar cells is critically influenced by electron extraction at the cathode interface, which is often limited by suboptimal energy alignment and disordered molecular packing in the cathode interlayer. Here, we demonstrate that synergistic coupling between interfacial dipole engineering and molecular orientation ordering in a binary cathode interlayer comprising an n\u2010type small molecule (NDI\u2010Ph) and an electron\u2010transporting polymer (PNDIT\u2010F3N\u2010Br) simultaneously optimizes energy\u2010level alignment and enhances vertical charge transport. Accordingly, the binary interlayer lowers the cathode work function to 3.23\u00a0eV, promotes face\u2010on \u03c0\u2013\u03c0 stacking in the overlying photoactive layer, suppresses trap\u2010assisted recombination, accelerates electron extraction (0.27\u00a0\u00b5s), and prolongs carrier lifetime (3.38\u00a0\u00b5s). As a result, single\u2010junction organic solar cells composed of PM6:BTP\u2010eC9 achieve a power conversion efficiency of 20.1%. Notably, the same binary cathode interlayer boosts the performance of devices comprising PM6:L8\u2010BO to 19.5%, outperforming those with single\u2010component interlayers, underscoring its universality across state\u2010of\u2010the\u2010art active layers. This work highlights the\u00a0role of dipole\u2013ordering coupling as a fundamental design principle for high\u2010performance interfacial layers in organic photovoltaics.<\/jats:p>","DOI":"10.1002\/smll.75084","type":"journal-article","created":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T05:48:03Z","timestamp":1786513683000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A Binary Cathode Interlayer Coupling Dipole Regulation and Molecular Orientation Enables 20.1%\u2010Efficient Organic Solar Cells"],"prefix":"10.1002","volume":"22","author":[{"given":"Xinqiang","family":"Zhu","sequence":"first","affiliation":[{"name":"Center on Nanoenergy Research Institute of Science and Technology for Carbon Peak and Neutrality School of Physical Science and Technology Guangxi University  Nanning 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