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dc.contributor.authorTan, Ching Hong-
dc.contributor.authorGasparini, Nicola-
dc.contributor.authorMcCulloch, Iain-
dc.contributor.authorDurrant, James R.-
dc.contributor.authorBrabec, Christoph J.-
dc.contributor.authorHamid, Zeinab-
dc.contributor.authorSong, Xin-
dc.contributor.authorWadsworth, Andrew-
dc.contributor.authorBaran, Derya-
dc.contributor.authorWehbe, Nimer-
dc.contributor.authorKirchartz, Thomas-
dc.contributor.authorNeophytou, Marios-
dc.contributor.authorZhang, Weimin-
dc.date.accessioned2019-06-26T08:17:22Z-
dc.date.available2019-06-26T08:17:22Z-
dc.date.issued2018-12-01-
dc.identifier.citationNature Communications, 2018, Vol. 9, No. 1en_US
dc.identifier.issn20411723-
dc.description.abstractNonfullerene solar cells have increased their efficiencies up to 13%, yet quantum efficiencies are still limited to 80%. Here we report efficient nonfullerene solar cells with quantum efficiencies approaching unity. This is achieved with overlapping absorption bands of donor and acceptor that increases the photon absorption strength in the range from about 570 to 700 nm, thus, almost all incident photons are absorbed in the active layer. The charges generated are found to dissociate with negligible geminate recombination losses resulting in a short-circuit current density of 20 mA cm -2 along with open-circuit voltages >1 V, which is remarkable for a 1.6 eV bandgap system. Most importantly, the unique nano-morphology of the donor:acceptor blend results in a substantially improved stability under illumination. Understanding the efficient charge separation in nonfullerene acceptors can pave the way to robust and recombination-free organic solar cells.en_US
dc.formatpdfen_US
dc.language.isoenen_US
dc.relation.ispartofNature Communicationsen_US
dc.rights© The Author(s).en_US
dc.subjectOrganic photovoltaicsen_US
dc.subjectSolar cellsen_US
dc.subjectFullerenesen_US
dc.titleRobust nonfullerene solar cells approaching unity external quantum efficiency enabled by suppression of geminate recombinationen_US
dc.typeArticleen_US
dc.collaborationCyprus University of Technologyen_US
dc.collaborationFriedrich-Alexander University Erlangen-Nurembergen_US
dc.collaborationImperial College Londonen_US
dc.collaborationKing Abdullah University of Science and Technologyen_US
dc.collaborationUniversity of Duisburg – Essenen_US
dc.collaborationSwansea Universityen_US
dc.subject.categoryMechanical Engineeringen_US
dc.subject.categoryMaterials Engineeringen_US
dc.journalsOpen Accessen_US
dc.countryCyprusen_US
dc.countryGermanyen_US
dc.countrySaudi Arabiaen_US
dc.countryUnited Kingdomen_US
dc.subject.fieldEngineering and Technologyen_US
dc.publicationPeer Revieweden_US
dc.identifier.doi10.1038/s41467-018-04502-3en_US
dc.identifier.pmid29802311en
dc.identifier.scopus2-s2.0-85047615108en
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/85047615108en
dc.contributor.orcid#NODATA#en
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dc.contributor.orcid#NODATA#en
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dc.contributor.orcid#NODATA#en
dc.contributor.orcid#NODATA#en
dc.contributor.orcid#NODATA#en
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dc.contributor.orcid#NODATA#en
dc.contributor.orcid#NODATA#en
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dc.contributor.orcid#NODATA#en
dc.relation.issue1en_US
dc.relation.volume9en_US
cut.common.academicyear2018-2019en_US
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.cerifentitytypePublications-
item.openairetypearticle-
crisitem.journal.journalissn2041-1723-
crisitem.journal.publisherSpringer Nature-
crisitem.author.deptDepartment of Mechanical Engineering and Materials Science and Engineering-
crisitem.author.facultyFaculty of Engineering and Technology-
crisitem.author.orcid0000-0003-2207-4193-
crisitem.author.parentorgFaculty of Engineering and Technology-
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