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DC Field | Value | Language |
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dc.citation.endPage | 27402 | - |
dc.citation.number | 48 | - |
dc.citation.startPage | 27394 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 7 | - |
dc.contributor.author | Guo, Hui | - |
dc.contributor.author | Zhang, Youdi | - |
dc.contributor.author | Chen, Lie | - |
dc.contributor.author | Liao, Xunfan | - |
dc.contributor.author | Xie, Qian | - |
dc.contributor.author | Cui, Yongjie | - |
dc.contributor.author | Huang, Bin | - |
dc.contributor.author | Yang, Changduk | - |
dc.contributor.author | Chen, Yiwang | - |
dc.date.accessioned | 2023-12-21T18:14:07Z | - |
dc.date.available | 2023-12-21T18:14:07Z | - |
dc.date.created | 2019-12-27 | - |
dc.date.issued | 2019-12 | - |
dc.description.abstract | The relatively low open circuit voltage (V-oc) of organic solar cells (OSCs) with narrow and ultra-narrow bandgap fused-ring electron acceptors limits further improvement of the OSCs. Simply down-shifting the highest occupied molecular orbital (HOMO) levels of the donors always results in the trade-off between the V-oc and short circuit current (J(sc)). In this work, we reported three novel noncovalently locked polymer donors based on different side-chain-modified benzodithiophene (BDT) units alternately copolymerized with an electron-deficient 3,3 '-dicarboxylate-substituted difluorotetrathiophene building block for efficient OSCs. Due to the existence of the electron-affinity moiety, deep HOMO levels are obtained for these copolymer donors, enabling the highest recorded V-oc of 0.99 V when blended with the IT-4F acceptor. Meanwhile, intramolecular noncovalent interactions in these copolymers favor a preferential face-on orientation. Efficient charge transport and exciton dissociation under a low driving force are observed in these novel polymer donors. Consequently, the device processed from a non-halogenated solvent shows a high efficiency of 12.5% with simultaneously high V-oc and J(sc), which is one of the highest performances of non-halogenated-solvent-processed OSCs to date. These results demonstrate that the synergistic effect of the energy band structure and molecular geometry can provide an effective molecular design strategy for high performance OSCs. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.7, no.48, pp.27394 - 27402 | - |
dc.identifier.doi | 10.1039/c9ta10624c | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-85076693253 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/30707 | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2019/TA/C9TA10624C#!divAbstract | - |
dc.identifier.wosid | 000502302300018 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Non-halogenated-solvent-processed highly efficient organic solar cells with a record open circuit voltage enabled by noncovalently locked novel polymer donors | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | CONJUGATED POLYMERS | - |
dc.subject.keywordPlus | FULLERENE | - |
dc.subject.keywordPlus | ACCEPTOR | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | STRATEGY | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordPlus | MOBILITY | - |
dc.subject.keywordPlus | LOSSES | - |
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