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dc.contributor.authorThu, Trang Do
dc.contributor.authorHong, Duc Pham
dc.contributor.authorManzhos, Sergei
dc.contributor.authorBell, John M
dc.contributor.authorSonar, Prashant
dc.date.accessioned2020-01-22T07:22:35Z
dc.date.available2020-01-22T07:22:35Z
dc.date.issued2017
dc.identifier.issn1944-8244
dc.identifier.doi10.1021/acsami.6b16395
dc.identifier.urihttp://hdl.handle.net/10072/390746
dc.description.abstractWe designed, synthesized, and characterized a series of novel electron deficient small molecule nonfullerene acceptors based on 1,8-naphthalimide (NAI) and 9-fluorenone (FN) with different branched alkyl chains using various techniques. These molecules are based on an acceptor–donor–acceptor–donor–acceptor (A1–D–A2–D–A1) molecular design configuration with NAI as the end-capping acceptor (A1), FN as electron-withdrawing central (A2) group, and thiophene ring as a donor (D) unit. These materials are named as NAI-FN-NAI (BO) and NAI-FN-NAI (HD) where BO and HD represent butyloctyl and hexyldecyl alkyl groups, respectively. To further modify energy levels of these materials, we converted the weak electron withdrawing ketonic group (C═O) attached to the FN moiety of NAI-FN-NAI (BO) to a stronger electron withdrawing cyano group (C≡N) to obtain the compound NAI-FCN-NAI (BO) by keeping the same alkyl chain. The optical, electrochemical, and thermal properties of the new acceptors were studied. The materials exhibited higher to medium band gaps, low lowest unoccupied molecular orbital (LUMO) energy levels, and highly thermally stable properties. Organic solar cell devices employing conventional poly(3-hexylthiophene) (P3HT) a donor polymer and the newly designed small molecules as the acceptor were investigated. Among all new materials, organic solar cell devices based on NAI-FN-NAI (BO) as an acceptor exhibit the highest performance with an open circuit voltage (VOC) of 0.88 V, a short-circuit current density (JSC) of 9.1 mAcm–2, a fill factor (FF) of 45%, and an overall power conversion efficiency (PCE) of 3.6%. This is the first report of 9-fluorenone based nonfullerene acceptor with P3HT donor in organic solar cell devices with such a promising performance.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherAmerican Chemical Society (ACS Publications)
dc.relation.ispartofpagefrom16968
dc.relation.ispartofpageto16977
dc.relation.ispartofissue20
dc.relation.ispartofjournalACS Applied Materials & Interfaces
dc.relation.ispartofvolume9
dc.subject.fieldofresearchChemical sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode34
dc.subject.fieldofresearchcode40
dc.subject.keywordsScience & Technology
dc.subject.keywordsNanoscience & Nanotechnology
dc.subject.keywordsMaterials Science, Multidisciplinary
dc.titleMolecular Engineering Strategy for High Efficiency Fullerene-Free Organic Solar Cells Using Conjugated 1,8-Naphthalimide and Fluorenone Building Blocks
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationThu, TD; Hong, DP; Manzhos, S; Bell, JM; Sonar, P, Molecular Engineering Strategy for High Efficiency Fullerene-Free Organic Solar Cells Using Conjugated 1,8-Naphthalimide and Fluorenone Building Blocks, ACS Applied Materials & Interfaces, 2017, 9 (20), pp. 16968-16977
dc.date.updated2020-01-22T07:18:26Z
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyrightThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, © 2017 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsami.6b16395
gro.hasfulltextFull Text
gro.griffith.authorSonar, Prashant


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