Comparison of the Photovoltaic Characteristics and Nanostructure of Fullerenes blended with Conjugated Polymers with Siloxane-Terminated and Branched Aliphatic Sidechains
DC Field | Value | Language |
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dc.contributor.author | Kim, Do Hwan | - |
dc.contributor.author | Ayzner, Alexander L. | - |
dc.contributor.author | Appleton, Anthony L. | - |
dc.contributor.author | Schmidt, Kristin | - |
dc.contributor.author | Mei, Jianguo) | - |
dc.contributor.author | Toney, Michael F. | - |
dc.contributor.author | Bao, Zhenan | - |
dc.date.accessioned | 2022-07-16T12:08:15Z | - |
dc.date.available | 2022-07-16T12:08:15Z | - |
dc.date.created | 2021-05-13 | - |
dc.date.issued | 2012-12 | - |
dc.identifier.issn | 0897-4756 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/163871 | - |
dc.description.abstract | All-organic bulk heterojunction solar cells based on blends of conjugated polymers with fullerenes have recently surpassed the 8% efficiency mark and are well on their way to the industrially relevant similar to 45% threshold. Using a low band-gap conjugated polymer, we have recently shown that polymer side chain engineering can lead to dramatic improvement in the in-plane charge carrier mobility. In this article, we investigate the effectiveness of siloxy side chain derivatization in controlling the photovoltaic performance of polymer: [6,6]-phenyl-C[71]-butyric acid methyl ester (PC71BM) blends and hence its influence on charge transport in the out-of-plane direction relevant for organic solar cells. We find that, in neat blends, the photocurrent of the polymer with siloxy side chains (PII2T-Si) is 4 times greater than that in blends using the polymer with branched aliphatic side chains (PII2T-ref). This difference is due to a larger out-of-plane hole mobility for PII2T-Si brought about by a largely face-on crystallite orientation as well as more optimal nanoscale polymer:PC71BM mixing. However, upon incorporating a common processing additive, 1,8-diiodooctane (DIO), into the spin-casting blend solution and following optimization, the PII2T-ref:PC71BM OPV device performance undergoes a large improvement and becomes the better-performing device, almost independent of DIO concentration (>1%). We find that the precise amount of DIO plays a larger role in determining the efficiency of PII2T-Si:PC71BM, and even at its maximum, the device performance lags behind optimized PII2T-ref:PC71BM blends. Using a combination of atomic force microscopy and small- and wide-angle X-ray scattering, we are able to elucidate the morphological modifications associated with the DIO-induced changes in both the nanoscale morphology and the molecular packing in blend films. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Comparison of the Photovoltaic Characteristics and Nanostructure of Fullerenes blended with Conjugated Polymers with Siloxane-Terminated and Branched Aliphatic Sidechains | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Do Hwan | - |
dc.identifier.doi | 10.1021/cm303572d | - |
dc.identifier.scopusid | 2-s2.0-84873693512 | - |
dc.identifier.wosid | 000315018500020 | - |
dc.identifier.bibliographicCitation | CHEMISTRY OF MATERIALS, v.25, no.3, pp.431 - 440 | - |
dc.relation.isPartOf | CHEMISTRY OF MATERIALS | - |
dc.citation.title | CHEMISTRY OF MATERIALS | - |
dc.citation.volume | 25 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 431 | - |
dc.citation.endPage | 440 | - |
dc.type.rims | ART | - |
dc.type.docType | 정기학술지(Article(Perspective Article포함)) | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | X-RAY-SCATTERING | - |
dc.subject.keywordPlus | CHARGE-LIMITED CURRENT | - |
dc.subject.keywordPlus | EXCITON DIFFUSION | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordPlus | POLY(3-HEXYLTHIOPHENE) | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | DISSOCIATION | - |
dc.subject.keywordPlus | EFFICIENCY | - |
dc.subject.keywordPlus | CELLS | - |
dc.subject.keywordAuthor | organic photovoltaics | - |
dc.subject.keywordAuthor | siloxane side chain | - |
dc.subject.keywordAuthor | DIO | - |
dc.subject.keywordAuthor | molecular packing | - |
dc.subject.keywordAuthor | thin-film morphology | - |
dc.subject.keywordAuthor | X-ray scattering | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/cm303572d | - |
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