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dc.contributor.authorBudden, Peteren
dc.contributor.authorWeiss, Leah Ren
dc.contributor.authorMüller, Matthiasen
dc.contributor.authorPanjwani, Naitik Aen
dc.contributor.authorDowland, Simonen
dc.contributor.authorAllardice, Jesse Ren
dc.contributor.authorGanschow, Michaelen
dc.contributor.authorFreudenberg, Janen
dc.contributor.authorBehrends, Janen
dc.contributor.authorBunz, Uwe HFen
dc.contributor.authorFriend, Richarden
dc.date.accessioned2021-02-10T00:30:38Z
dc.date.available2021-02-10T00:30:38Z
dc.date.issued2021-03-09en
dc.identifier.issn2041-1723
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/317435
dc.description.abstractWe report a fully efficient singlet exciton fission material with high ambient chemical stability. 10,21-Bis(triisopropylsilylethynyl)tetrabenzo[a,c,l,n]pentacene (TTBP) combines an acene core with triphenylene wings that protect the formal pentacene from chemical degradation. The electronic energy levels position singlet exciton fission to be endothermic, similar to tetracene despite the triphenylenes. TTBP exhibits rapid early time singlet fission with quantitative yield of triplet pairs within 100 ps followed by thermally activated separation to free triplet excitons over 65 ns. TTBP exhibits high photoluminescence quantum efficiency, close to 100% when dilute and 20% for solid films, arising from triplet-triplet annihilation. In using such a system for exciton multiplication in a solar cell, maximum thermodynamic performance requires radiative decay of the triplet population, observed here as emission from the singlet formed by recombination of triplet pairs. Combining chemical stabilisation with efficient endothermic fission provides a promising avenue towards singlet fission materials for use in photovoltaics.
dc.format.mediumElectronicen
dc.languageengen
dc.publisherNature Research
dc.rightsAll rights reserved
dc.titleSinglet exciton fission in a modified acene with improved stability and high photoluminescence yield.en
dc.typeArticle
prism.issueIdentifier1en
prism.publicationDate2021en
prism.publicationNameNature communicationsen
prism.startingPage1527
prism.volume12en
dc.identifier.doi10.17863/CAM.64548
dcterms.dateAccepted2021-01-26en
rioxxterms.versionofrecord10.1038/s41467-021-21719-xen
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2021-03-09en
dc.contributor.orcidBudden, Peter [0000-0002-8049-3401]
dc.contributor.orcidPanjwani, Naitik A [0000-0002-2913-5377]
dc.contributor.orcidBehrends, Jan [0000-0003-1024-428X]
dc.contributor.orcidFriend, Richard [0000-0001-6565-6308]
dc.identifier.eissn2041-1723
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/M005143/1)
pubs.funder-project-idEPSRC (1803591)
datacite.issupplementedby.urlhttps://doi.org/10.17863/CAM.63436
cam.orpheus.counter4*
rioxxterms.freetoread.startdate2024-02-09


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