{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T10:44:47Z","timestamp":1791888287293,"version":"4.3.4"},"reference-count":38,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T00:00:00Z","timestamp":1791849600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T00:00:00Z","timestamp":1791849600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100020595","name":"National Science and Technology Council","doi-asserted-by":"publisher","award":["NSTC 114\u20102113\u2010M\u2010008 \u2010005 \u2010MY3"],"award-info":[{"award-number":["NSTC 114\u20102113\u2010M\u2010008 \u2010005 \u2010MY3"]}],"id":[{"id":"10.13039\/100020595","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100020595","name":"National Science and Technology Council","doi-asserted-by":"publisher","award":["NSTC 113\u20102124\u2010M\u2010008 \u2010002 \u2010MY3"],"award-info":[{"award-number":["NSTC 113\u20102124\u2010M\u2010008 \u2010002 \u2010MY3"]}],"id":[{"id":"10.13039\/100020595","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100020595","name":"National Science and Technology Council","doi-asserted-by":"publisher","award":["NSTC115\u20102639\u2010M\u2010A49\u2010001\u2010ASP"],"award-info":[{"award-number":["NSTC115\u20102639\u2010M\u2010A49\u2010001\u2010ASP"]}],"id":[{"id":"10.13039\/100020595","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100020595","name":"National Science and Technology Council","doi-asserted-by":"publisher","award":["114\u20102221\u2010E\u2010131\u2010036\u2010MY3"],"award-info":[{"award-number":["114\u20102221\u2010E\u2010131\u2010036\u2010MY3"]}],"id":[{"id":"10.13039\/100020595","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The strategic design of electron\u2010transporting materials is crucial for improving charge extraction and stability in perovskite solar cells (PSCs); however, device performance is often limited by poor interfacial compatibility, which leads to inefficient charge transfer and reduced stability. To address these challenges, two new fluorinated electron\u2010transport interfacial materials (\n                    <jats:bold>ETIMs<\/jats:bold>\n                    ), namely\n                    <jats:bold>TFP\u2010Bp<\/jats:bold>\n                    (\n                    <jats:bold>1<\/jats:bold>\n                    ) and\n                    <jats:bold>TFP\u2010Pyr<\/jats:bold>\n                    (\n                    <jats:bold>2<\/jats:bold>\n                    ), were developed by incorporating hydrophobic fluorinated phenyl (\n                    <jats:bold>FP<\/jats:bold>\n                    ) substituents onto biphenyl (\n                    <jats:bold>Bp<\/jats:bold>\n                    ) and pyrene (\n                    <jats:bold>Pyr<\/jats:bold>\n                    ) cores. Additionally, a non\u2010fluorinated pyrene derivative,\n                    <jats:bold>TP\u2010Pyr (3)<\/jats:bold>\n                    , was synthesized as a structural analogue of\n                    <jats:bold>TFP\u2010Pyr<\/jats:bold>\n                    (\n                    <jats:bold>2<\/jats:bold>\n                    ) to elucidate the influence of fluorine substitution on interfacial properties and device performance. Single\u2010crystal X\u2010ray analysis of compounds\n                    <jats:bold>1<\/jats:bold>\n                    and\n                    <jats:bold>2<\/jats:bold>\n                    reveals that both molecules adopt markedly twisted conformations, which effectively suppress excessive aggregation. In addition, the fluorinated substituents enhance surface hydrophobicity and strengthen interfacial interactions with the perovskite layer, leading to improved film formation. The optimized devices based on\n                    <jats:bold>TFP\u2010Bp<\/jats:bold>\n                    (\n                    <jats:bold>1<\/jats:bold>\n                    ) and\n                    <jats:bold>TFP\u2010Pyr<\/jats:bold>\n                    (\n                    <jats:bold>2<\/jats:bold>\n                    ) deliver power conversion efficiencies (PCEs) of\n                    <jats:bold>21.07%<\/jats:bold>\n                    and\n                    <jats:bold>21.50%<\/jats:bold>\n                    for wide\u2010bandgap PSCs, respectively, under one\u2010sun illumination. Notably, excellent indoor performance is also achieved, with PCEs of\n                    <jats:bold>41.12%<\/jats:bold>\n                    for\n                    <jats:bold>TFP\u2010Bp<\/jats:bold>\n                    (\n                    <jats:bold>1<\/jats:bold>\n                    ) and\n                    <jats:bold>43.34%<\/jats:bold>\n                    for\n                    <jats:bold>TFP\u2010Pyr<\/jats:bold>\n                    (\n                    <jats:bold>2<\/jats:bold>\n                    ), demonstrating their strong potential as\n                    <jats:bold>ETIM<\/jats:bold>\n                    for indoor light applications.\n                  <\/jats:p>","DOI":"10.1002\/smll.76211","type":"journal-article","created":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T09:46:52Z","timestamp":1791884812000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Fluorine\u2010Rich Pentafluorophenyl\u2010Substituted Electron\u2010Transport Interfacial Materials for Efficient Perovskite Solar Cells"],"prefix":"10.1002","author":[{"given":"Deebakkrishnan","family":"Ganesan","sequence":"first","affiliation":[{"name":"Department of Chemistry and Taiwan Hydrogen Cluster\u2010Hydrogen Energy Research Centre National Central University  Taoyuan Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6807-5832","authenticated-orcid":false,"given":"Zhong\u2010En","family":"Shi","sequence":"additional","affiliation":[{"name":"Department of Materials Engineering and Center for Plasma and Thin Film Technologies Ming Chi University of Technology  New Taipei City Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1303-7032","authenticated-orcid":false,"given":"Yu\u2010Wei","family":"Su","sequence":"additional","affiliation":[{"name":"Department of Molecular Science and Engineering Institute of Organic and Polymeric Materials National Taipei University of Technology  Taipei Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rajendiran","family":"Balasaravanan","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Taiwan Hydrogen Cluster\u2010Hydrogen Energy Research Centre National Central University  Taoyuan Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sheng\u2010Fong","family":"Peng","sequence":"additional","affiliation":[{"name":"Department of Molecular Science and Engineering Institute of Organic and Polymeric Materials National Taipei University of Technology  Taipei Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi\u2010Hsin","family":"Hu","sequence":"additional","affiliation":[{"name":"Department of Materials Engineering and Center for Plasma and Thin Film Technologies Ming Chi University of Technology  New Taipei City Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ming\u2010Han","family":"Cai","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Taiwan Hydrogen Cluster\u2010Hydrogen Energy Research Centre National Central University  Taoyuan Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shao\u2010Huan","family":"Hong","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering National Taiwan University  Taipei Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8778-5386","authenticated-orcid":false,"given":"Cheng\u2010Liang","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering National Taiwan University  Taipei 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