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dc.contributor.authorHung, Kai-Enen_US
dc.contributor.authorTsai, Che-Enen_US
dc.contributor.authorChang, Shao-Lingen_US
dc.contributor.authorLai, Yu-Yingen_US
dc.contributor.authorJeng, U-Seren_US
dc.contributor.authorCao, Fong-Yien_US
dc.contributor.authorHsu, Chain-Shuen_US
dc.contributor.authorSu, Chun-Jenen_US
dc.contributor.authorCheng, Yen-Juen_US
dc.date.accessioned2018-08-21T05:53:07Z-
dc.date.available2018-08-21T05:53:07Z-
dc.date.issued2017-12-20en_US
dc.identifier.issn1944-8244en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acsami.7b13426en_US
dc.identifier.urihttp://hdl.handle.net/11536/144295-
dc.description.abstractA new class of additive materials bis(pentafluorophenyl) diesters (BFEs) where the two pentafluorophenyl (C6F5) moieties are attached at the both ends of a linear aliphatic chain with tunable tether lengths (BFS, BF7, and BF13) were designed and synthesized. In the presence of BF7 to restrict the migration of fullerehe by hand-grabbing-like supramolecular interactions induced between the C6F5 groups and the surface of fullerene, the P3HT:PC61BM:BF7 device showed stable device characteristiCs after thermal heating at 150 degrees C for 25, 'IL The morphologies Of the active layers were systematically investigated by optical microscopy, grazing-incidence small-angle X-ray scattering (GISAXS), and atomic force microscopy. The tether length between the two C6F5 groups plays a pivotal role in controlling the intermolecular attractions. BF13 with a long and flexible tether might form a BF13-fullerene sandwich complex that fails to prevent fullerene's movement and aggregation, while BF5 with too short tether length decreases the possibility of interactions between the C6F5 groups and the fullerenes. BF7 with the optimal tether length has the best ability to stabilize the morphology. In sharp contrast, the nonfluorinated BP7 analogue without C6F5-C-60 physical interactions does not have the capability of morphological stabilization, unambiguously revealing the necessity of the C6F5 group. Most importantly, the function of BF7 can be also applied to the high-performance PffBT4BT-20D:PC71BM system, which exhibited an original PCE of 8.80%. After thermal heating at 85 degrees C for 200 h, the efficiency of the Pffi3T4BT-20D:PC71BM:BF7 device only decreased slightly to 7.73%, maintaining 88% of its original efficiency. To the best of our knowledge, this is the first time that the thermabdriven morphological evolution of the high-performance PffBT4BT-20D polymer has been investigated, and its morphological stability in the inverted device can be successfully preserved by the incorporation of BF7. This research also demonstrates that BF7 is not only effective with PC61BM but also to PC71BM.en_US
dc.language.isoen_USen_US
dc.subjectadditivesen_US
dc.subjectfullerene aggregationen_US
dc.subjectmorphological stabilityen_US
dc.subjectsupramolecular interactionsen_US
dc.subjectpolymer solar cellsen_US
dc.titleBispentafluorophenyl-Containing Additive: Enhancing Efficiency and Morphological Stability of Polymer Solar Cells via Hand-Grabbing-Like Supramolecular Pentafluorophenyl-Fullerene Interactionsen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/acsami.7b13426en_US
dc.identifier.journalACS APPLIED MATERIALS & INTERFACESen_US
dc.citation.volume9en_US
dc.citation.spage43861en_US
dc.citation.epage43870en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000418783700053en_US
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