{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T10:46:06Z","timestamp":1792147566249,"version":"4.4.0"},"reference-count":63,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T00:00:00Z","timestamp":1792108800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T00:00:00Z","timestamp":1792108800000},"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 113\u20102221\u2010E\u2010A49\u2010046\u2010MY2"],"award-info":[{"award-number":["NSTC 113\u20102221\u2010E\u2010A49\u2010046\u2010MY2"]}],"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 114\u20102221\u2010E\u2010A49\u2010029\u2010MY2"],"award-info":[{"award-number":["NSTC 114\u20102221\u2010E\u2010A49\u2010029\u2010MY2"]}],"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                    A small amount of a synergistically designed and selenophene\u2010substituted second polymer acceptor, PYISe\u2010BO\u2010OD, was incorporated into the PYIT\u2010OD acceptor layer for enhancing interfacial interactions with the PM6 donor layer, resulting in high\u2010performance and superior thermal stability in all\u2010polymer p\u2010i\u2010n organic photovoltaics. The PM6\/PYIT\u2010OD:PYISe\u2010BO\u2010OD (wt. 1:0.1) device displayed a champion power conversion efficiency (PCE) value of 19.1% and a superior T\n                    <jats:sub>80<\/jats:sub>\n                    (time for PCE = 0.8 PCE\n                    <jats:sub>onset<\/jats:sub>\n                    value at 80\u00b0C) value of 3415\u00a0h, greatly surpassing the PM6\/PYIT\u2010OD device with PCE and T\n                    <jats:sub>80<\/jats:sub>\n                    values of 16.3% and 937\u00a0h, respectively. The PCE and thermal stability improvements resulted from PYISe\u2010BO\u2010OD's optimized intermolecular interactions with both PM6 and PYIT\u2010OD (binding energy value \u20132.73 and \u22122.71\u00a0eV by density functional theory; Flory\u2013Huggins interaction parameter values\u00a0of 0.014 and 0.652) that expanded the interfacial i\u2010region, inducing more efficient charge separation and prolonged carrier lifetime. The grazing\u2010incidence wide\u2010angle X\u2010ray scattering results revealed the crystalline coherence length values remained after 2050\u00a0h because of the stabilized morphology owing to strong intermolecular interactions of PYISe\u2010BO\u2010OD with PM6 and PYIT\u2010OD. The strategy of incorporating synergistical second polymer acceptor for enhancing both the efficiency and thermal stability of the devices lays the foundation for the realization of p\u2010i\u2010n organic photovoltaic devices.\n                  <\/jats:p>","DOI":"10.1002\/smll.76323","type":"journal-article","created":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T09:59:28Z","timestamp":1792144768000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Enhanced Efficiency and Thermal Stability in All\u2010Polymer p\u2010i\u2010n Organic Photovoltaics With Synergistically Designed Second Polymer Acceptor"],"prefix":"10.1002","author":[{"given":"Tzu\u2010Ching","family":"Lu","sequence":"first","affiliation":[{"name":"Department of Materials Science and Engineering National Yang Ming Chiao Tung University  Hsinchu 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Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5155-4087","authenticated-orcid":false,"given":"Chi\u2010Hsuan","family":"Lee","sequence":"additional","affiliation":[{"name":"Research Center for Applied Sciences Academia Sinica  Taipei 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 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0281-7554","authenticated-orcid":false,"given":"Chih\u2010Ping","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Materials Engineering and Center for Plasma and Thin Film Technologies Ming Chi University of Technology  New Taipei City 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