Asymmetric selenophene-based non-fullerene acceptors for high-performance organic solar cells
DC Field | Value | Language |
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dc.contributor.author | Li, Chao | - |
dc.contributor.author | Xia, Tian | - |
dc.contributor.author | Song, Jiali | - |
dc.contributor.author | Fu, Huiting | - |
dc.contributor.author | Ryu, Hwa Sook | - |
dc.contributor.author | Weng, Kangkang | - |
dc.contributor.author | Ye, Linglong | - |
dc.contributor.author | Woo, Han Young | - |
dc.contributor.author | Sun, Yanming | - |
dc.date.accessioned | 2021-09-01T21:22:02Z | - |
dc.date.available | 2021-09-01T21:22:02Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2019-01-28 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/68239 | - |
dc.description.abstract | Compared to thiophene-based non-fullerene acceptors (NFAs), selenophene-based NFAs have received much less attention. And organic solar cells (OSCs) based on selenophene-containing NFAs typically exhibit relatively low power conversion efficiency (PCE < 12%) and fill factor (FF < 70%). In this contribution, we have designed and synthesized two asymmetric selenophene-based NFAs, named SePTT-2F and SePTTT-2F, which possess the same end-capping group but different selenophene-containing conjugated backbones. On comparing the two NFAs, SePTTT-2F with more extended conjugation in the backbone was found to have almost the same maximum absorption peak and optical bandgap in film as SePTT-2F but an up-shifted lowest unoccupied molecular orbital (LUMO) energy level and higher electron mobility. By pairing the NFAs with the polymer donor PBT1-C, the resultant blend film based on SePTTT-2F exhibited higher and more balanced charge mobilities and more efficient exciton dissociation and charge collection in comparison with the SePTT-2F-based blend film. As a result, OSCs based on SePTTT-2F delivered an impressively high PCE of 12.24% with an outstanding FF of 75.9%, much higher than those of the SePTT-2F-based OSCs. To the best of our knowledge, the PCE of 12.24% and FF of 75.9% are among the highest values reported in the literature so far for both the parameters amongst selenophene-containing NFA-based OSCs. Our results demonstrate that extending the conjugation in the selenophene-containing backbone is an effective strategy to design highly efficient selenophene-based NFAs. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | SMALL-MOLECULE ACCEPTORS | - |
dc.subject | ELECTRON-ACCEPTOR | - |
dc.subject | PHOTOVOLTAIC PERFORMANCE | - |
dc.subject | EFFICIENCY | - |
dc.subject | ENABLES | - |
dc.subject | J(SC) | - |
dc.title | Asymmetric selenophene-based non-fullerene acceptors for high-performance organic solar cells | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Woo, Han Young | - |
dc.identifier.doi | 10.1039/c8ta11197a | - |
dc.identifier.scopusid | 2-s2.0-85060464064 | - |
dc.identifier.wosid | 000459724300008 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.7, no.4, pp.1435 - 1441 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 7 | - |
dc.citation.number | 4 | - |
dc.citation.startPage | 1435 | - |
dc.citation.endPage | 1441 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | SMALL-MOLECULE ACCEPTORS | - |
dc.subject.keywordPlus | ELECTRON-ACCEPTOR | - |
dc.subject.keywordPlus | PHOTOVOLTAIC PERFORMANCE | - |
dc.subject.keywordPlus | EFFICIENCY | - |
dc.subject.keywordPlus | ENABLES | - |
dc.subject.keywordPlus | J(SC) | - |
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