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The third component DTP\u20102EH\u2010IO2Cl induces not only energy transfer but also stronger molecular packing of the acceptors, resulting in a larger coherence length and enhanced absorption that enhances devices\u2019 power conversion efficiencies (PCE) and thermal stability. The PCE values of the champion ternary\u2010blend devices PM6:L8\u2010BO, PM6:BTP\u2010eC9, and PM6:Y6 incorporating DTP\u20102EH\u2010IO2Cl are 19.2, 18.3, and 17.6%, respectively, versus 16.5, 15.8, and 15.4% for their corresponding binary blend devices, displaying relative increases from 14 to 16%. The thermal stability (T\n                    <jats:sub>80<\/jats:sub>\n                    ) of the PM6:L8\u2010BO: DTP\u20102EH\u2010IO2Cl ternary blend device increases dramatically to 568\u00a0h from 57\u00a0h for the PM6:L8\u2010BO binary blend device. These enhancements can be attributed to the effectiveness of the A\u2010D\u2010A type rigid DTP\u20102EH\u2010IO2Cl as the third component in increasing light absorption through energy transfer and inducing intermolecular packing to the A\u2212DA\u2032D\u2212A acceptors, providing an effective way to tune the morphology and to boost both the PCE and thermal stability of OPVs.\n                  <\/jats:p>","DOI":"10.1002\/smll.202500692","type":"journal-article","created":{"date-parts":[[2025,4,22]],"date-time":"2025-04-22T00:39:51Z","timestamp":1745282391000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Ternary Blend Organic Photovoltaics with High Efficiency and Stability Through Energy Transfer and Molecular Packing Induced by an A\u2010D\u2010A Small Molecule"],"prefix":"10.1002","volume":"21","author":[{"given":"Bin","family":"Chang","sequence":"first","affiliation":[{"name":"Department of Materials Science and Engineering National Yang Ming Chiao Tung University  Hsinchu 30010 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chung\u2010Hao","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering National Yang Ming Chiao Tung University  Hsinchu 30010 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Atsushi","family":"Yabushita","sequence":"additional","affiliation":[{"name":"Department of Electrophysics National Yang Ming Chiao Tung University  Hsinchu 30010 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tzu\u2010Ching","family":"Lu","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering National Yang Ming Chiao Tung University  Hsinchu 30010 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ching\u2010En","family":"Tsai","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering National Yang Ming Chiao Tung University  Hsinchu 30010 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ting\u2010Yi","family":"Chu","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering National Yang Ming Chiao Tung University  Hsinchu 30010 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shaun","family":"Tan","sequence":"additional","affiliation":[{"name":"Department of Chemistry Massachusetts Institute of Technology  77 Massachusetts Avenue Cambridge MA 02139 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cheng\u2010Si","family":"Tsao","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering National Taiwan University  Taipei 106319 Taiwan"},{"name":"National Synchrotron Radiation Research Center  Hsinchu 30010 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu\u2010Sheng","family":"Chu","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering National Yang Ming Chiao Tung University  Hsinchu 30010 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fang\u2010Cheng","family":"Ou","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering National Yang Ming Chiao Tung University  Hsinchu 30010 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0248-4091","authenticated-orcid":false,"given":"Kung\u2010Hwa","family":"Wei","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering National Yang Ming Chiao Tung University  Hsinchu 30010 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,4,21]]},"reference":[{"key":"e_1_2_7_1_1","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202215095"},{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.202312311"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202408308"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2TA04800K"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.nanoen.2017.11.016"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsami.2c06135"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1039\/C8TA12034J"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1039\/D1TA90215F"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201908205"},{"key":"e_1_2_7_10_1","volume":"15","author":"Chang B.","year":"2023","journal-title":"ACS Appl. 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