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dc.contributor.authorStoliar, P.
dc.contributor.authorKshirsagar, R.
dc.contributor.authorMassi, Massimiliano
dc.contributor.authorAnnibale, P.
dc.contributor.authorAlbonetti, C.
dc.contributor.authorde Leeuw, D.
dc.contributor.authorBiscarini, F.
dc.date.accessioned2017-01-30T11:27:37Z
dc.date.available2017-01-30T11:27:37Z
dc.date.created2012-12-03T07:24:54Z
dc.date.issued2007
dc.identifier.citationStoliar, Pablo and Kshirsagar, Rajendra and Massi, Massimiliano and Annibale, Paolo and Albonetti, Cristiano and de Leeuw, Dago M. and Biscarini, Fabio. 2007. Charge injection across self-assembly monolayers in organic field-effect transistors: Odd-even effects. Journal of the American Chemical Society 129 (20): pp. 6477-6484.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/11926
dc.identifier.doi10.1021/ja069235m
dc.description.abstract

We investigate the role of self-assembly monolayers in modulating the response of organic field-effect transistors. Alkanethiol monolayers of chain length n are self-assembled on the source and drain electrodes of pentacene field-effect transistors. The charge carrier mobility mu exhibits large fluctuations correlated with odd-even n. For n < 8, mu increases by 1 order of magnitude owing to the decrease of the hole injection barrier and the improved molecular order at the organic-metallic interface. For n >= 8, mu decays exponentially with an inverse decay length beta = 0.6 A(-1). Our results show that (i) charge injection across the interface occurs by through-bond tunneling of holes mediated by the alkanethiol layer; (ii) in the long-chain regime, the charge injection across the alkanethiol monolayer completely governs the transistor response; (iii) the transistor is a sensitive gauge for probing charge transport across single monolayers. The odd-even effect is ascribed to the anisotropic coupling between the alkanethiol terminal sigma bond and the HOMO level of ordered pentacene molecules.

dc.publisherThe American Chemical Society
dc.subjectAlkanethiol Monolayers
dc.subjectThin-Film Transistors
dc.subjectSurface
dc.subjectGold
dc.subjectSilicon-Oxide
dc.subjectContact Resistance
dc.subjectJunctions
dc.subjectPentacene
dc.subjectElectronic-Structure
dc.subjectMolecular-Orientation
dc.titleCharge injection across self-assembly monolayers in organic field-effect transistors: Odd-even effects
dc.typeJournal Article
dcterms.source.volume129
dcterms.source.number20
dcterms.source.startPage6477
dcterms.source.endPage6484
dcterms.source.issn00027863
dcterms.source.titleJournal of the American Chemical Society
curtin.department
curtin.accessStatusFulltext not available


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