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DC Field | Value | Language |
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dc.citation.startPage | 2403093 | - |
dc.citation.title | ADVANCED FUNCTIONAL MATERIALS | - |
dc.contributor.author | Sun, Zhe | - |
dc.contributor.author | Ma, Hayoung | - |
dc.contributor.author | Yang, Sangjin | - |
dc.contributor.author | Cho, Yongjoon | - |
dc.contributor.author | Lee, Seunglok | - |
dc.contributor.author | Park, Jaeyeong | - |
dc.contributor.author | Mai, Thi Le Huyen | - |
dc.contributor.author | Kim, Wonjun | - |
dc.contributor.author | Jeong, Seonghun | - |
dc.contributor.author | Kim, Seoyoung | - |
dc.contributor.author | Yang, Changduk | - |
dc.date.accessioned | 2024-05-03T10:35:19Z | - |
dc.date.available | 2024-05-03T10:35:19Z | - |
dc.date.created | 2024-04-26 | - |
dc.date.issued | 2024-04 | - |
dc.description.abstract | In the pursuit of high-efficiency polythiophene (PT) organic solar cells (OSCs), a critical challenge is the reduction of nonradiative recombination. This study comprehensively explores polydithienylthiazolothiazole (PTTz)-based PT terpolymers: PTTz-Tz and PTTz-TzT, in which it is demonstrate that molecular structure alterations greatly influence the aggregation kinetics and orientation of these polymers. Specifically, PTTz-TzT achieves rapid ordering aggregation during spin coating, effectively suppressing excessive polymer aggregation and facilitating appropriate phase separation upon mixing with the acceptor. Meanwhile, PTTz-TzT inherently adopts a face-on orientation, resulting in more structured pi-pi stacking in the vertical direction after acceptor integration, compared to the intrinsic edge-on orientation of PTTz-Tz. These factors collectively contribute to lower Urbach energy and a substantial reduction of nonradiative recombination in PTTz-TzT-based OSCs, culminating in a high photovoltaic conversion efficiency (PCE) exceeding 16%. Furthermore, a prominent PCE of 19.11% is obtained by PTTz-TzT via ternary blend strategy, which is among the highest values reported for the OSCs. This investigation underscores the significance of aggregation kinetics and orientation in PT-based polymers, especially regarding Urbach energy and nonradiative recombination, and offers novel insights for designing high-performance polythiophene donors. A reduction of the nonradiative recombination in polythiophene-based organic solar cells from the control of aggregation kinetics and orientation is achieved. By backbone design, PTTz-TzT with short drying time and face-on orientation exhibit reduced Urbach energy and nonradiative recombination in solar cells. PCEs higher than 16% in binary and 19% in ternary are achieved. image | - |
dc.identifier.bibliographicCitation | ADVANCED FUNCTIONAL MATERIALS, pp.2403093 | - |
dc.identifier.doi | 10.1002/adfm.202403093 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.scopusid | 2-s2.0-85190513395 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/82277 | - |
dc.identifier.wosid | 001204725100001 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Insight Into Designing High-Performance Polythiophenes for Reduced Urbach Energy and Nonradiative Recombination in Organic Solar Cells | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science; Physics | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | in situ PL | - |
dc.subject.keywordAuthor | nonradiative recombination | - |
dc.subject.keywordAuthor | organic solar cells | - |
dc.subject.keywordAuthor | orientation | - |
dc.subject.keywordAuthor | polythiophene | - |
dc.subject.keywordPlus | ORIENTATION | - |
dc.subject.keywordPlus | POLYMERS | - |
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