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DC Field | Value | Language |
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dc.citation.endPage | 20399 | - |
dc.citation.number | 22 | - |
dc.citation.startPage | 20390 | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 6 | - |
dc.contributor.author | Lee, Junghoon | - |
dc.contributor.author | Jang, Moonjeong | - |
dc.contributor.author | Lee, Sang Myeon | - |
dc.contributor.author | Yoo, Dohyuk | - |
dc.contributor.author | Shin, Tae Joo | - |
dc.contributor.author | Oh, Joon Ha | - |
dc.contributor.author | Yang, Changduk | - |
dc.date.accessioned | 2023-12-22T02:07:01Z | - |
dc.date.available | 2023-12-22T02:07:01Z | - |
dc.date.created | 2014-12-17 | - |
dc.date.issued | 2014-11 | - |
dc.description.abstract | Over the past few years, one of the most remarkable advances in the field of polymer solar cells (PSCs) has been the development of fluorinated 2,1,3-benzothiadiazole (BT)-based polymers that lack the solid working principles of previous designs, but boost the power conversion efficiency. To assess a rich data set for the influence of the fluorinated BT units on the charge-transport characteristics in organic field-effect transistors (OFETs), we synthesized two new polymers (PDPP-FBT and PDPP-2FBT ) incorporating diketopyrrolopyrrole (DPP) and either single- or double-fluorinated BT and thoroughly investigated them via a range of techniques. Unlike the small differences in the absorption properties of PDPP-FBT and its nonfluorinated analogue (PDPPBT), the introduction of doubly fluorinated BT into the polymer backbone induces a noticeable change in its optical profiles and energy levels, which results in a slightly wider bandgap and deeper HOMO for PDPP-2FBT, relative to the others. Grazing incidence X-ray diffraction (GIXD) analysis reveals that both fluorinated polymer films have long-range orders along the out-of-plane direction, and π-π stacking in the in-plane direction, implying semicrystalline lamellar structures with edge-on orientations in the solid state. Thanks to the strong intermolecular interactions and highly electron-deficient π-systems driven by the inclusion of F atoms, the polymers exhibit electron mobilities of up to 0.42 and 0.30 cm2 V-1 s-1 for PDPP-FBT and PDPP-2FBT, respectively, while maintaining hole mobilities higher than 0.1 cm2 V-1 s-1. Our results highlight that the use of fluorinated BT blocks in the polymers is a promising molecular design strategy for improving electron transporting performance without sacrificing their original hole mobility values. (Figure Presented). | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.6, no.22, pp.20390 - 20399 | - |
dc.identifier.doi | 10.1021/am505925w | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.scopusid | 2-s2.0-84914689928 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/9488 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84914689928 | - |
dc.identifier.wosid | 000345721400114 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Fluorinated benzothiadiazole (BT) groups as a powerful unit for high-performance electron-transporting polymers | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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