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dc.contributor.authorNikolka, Mark
dc.contributor.authorBroch, Katharina
dc.contributor.authorArmitage, John
dc.contributor.authorHanifi, David
dc.contributor.authorNowack, Peer
dc.contributor.authorVenkateshvaran, Deepak
dc.contributor.authorSadhanala, aditya
dc.contributor.authorSaska, Jan
dc.contributor.authorMascal, Mark
dc.contributor.authorJung, Seok-Heon
dc.contributor.authorLee, Jin Kyun
dc.contributor.authorMcCulloch, Iain
dc.contributor.authorSalleo, Alberto
dc.contributor.authorSirringhaus, Henning
dc.date.accessioned2019-03-22T00:30:12Z
dc.date.available2019-03-22T00:30:12Z
dc.identifier.issn2041-1723
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/290736
dc.description.abstractCharge transport in conjugated polymer semiconductors has traditionally been thought to be limited to a low mobility regime by pronounced energetic disorder. Much progress has recently been made in advancing carrier mobilities in field-effect transistors through developing low-disorder conjugated polymers. However, in diodes these polymers have to date not shown much improved mobilities, presumably reflecting the fact that in diodes lower carrier concentrations are available to fill up residual tail states in the density of states. Here, we show that the bulk charge transport in low-disorder polymers is limited by water-induced trap states and that their concentration can be dramatically reduced through incorporating small molecular additives into the polymer film. Upon incorporation of the additives we achieve space-charge limited current characteristics that resemble molecular single crystals such as rubrene with high, trap-free SCLC mobilities up to 0.2 cm2/Vs and a width of the residual tail state distribution comparable to kBT.
dc.description.sponsorshipWe gratefully acknowledge financial support the Engineering and Physical Sciences Research Council (EPSRC) through a Programme Grant (EP/M005141/1). M.N. acknowledges financial support from the European Commission through a Marie-Curie Individual Fellowship (EC Grant Agreement Number: 747461).
dc.publisherNature Publishing Group
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleHigh-mobility, trap-free charge transport in conjugated polymer diodes
dc.typeArticle
prism.number2122
prism.publicationNameNature Communications
prism.volume10
dc.identifier.doi10.17863/CAM.37936
dcterms.dateAccepted2019-04-02
rioxxterms.versionofrecord10.1038/s41467-019-10188-y
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2019-04-02
dc.contributor.orcidArmitage, John [0000-0001-9130-7427]
dc.contributor.orcidVenkateshvaran, Deepak [0000-0002-7099-7323]
dc.contributor.orcidSirringhaus, Henning [0000-0001-9827-6061]
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEuropean Research Council (610115)
cam.issuedOnline2019-05-09
datacite.issupplementedby.urlhttps://doi.org/10.17863/CAM.36394
cam.orpheus.successTue Jun 16 10:41:22 BST 2020 - The item has an open VoR version.
cam.orpheus.counter12
rioxxterms.freetoread.startdate2100-01-01


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International