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Article: Making electrical contacts to molecular monolayers

TitleMaking electrical contacts to molecular monolayers
Authors
Issue Date2002
PublisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/nano
Citation
Nanotechnology, 2002, v. 13 n. 1, p. 5-14 How to Cite?
AbstractElectrical contacts between a metal probe and molecular monolayers have been characterized using conducting atomic force microscopy in an inert environment and in a voltage range that yields reversible current-voltage data. The current through alkanethiol monolayers depends on the contact force in a way that is accounted for by the change of chain-to-chain tunnelling with film thickness. The electronic decay constant, β N, was obtained from measurements as a function of chain length at constant force and bias, yielding β N = 0.8 ± 0.2 per methylene over a ± 3 V range. Current-voltage curves are difficult to reconcile with this almost constant value. Very different results are obtained when a gold tip contacts a 1, 8-octanedithiol film. Notably, the current-voltage curves are often independent of contact force. Thus the contact may play a critical role both in the nature of charge transport and the shape of the current-voltage curve.
Persistent Identifierhttp://hdl.handle.net/10722/174824
ISSN
2015 Impact Factor: 3.573
2015 SCImago Journal Rankings: 1.196
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCui, XDen_US
dc.contributor.authorZarate, Xen_US
dc.contributor.authorTomfohr, Jen_US
dc.contributor.authorSankey, OFen_US
dc.contributor.authorPrimak, Aen_US
dc.contributor.authorMoore, ALen_US
dc.contributor.authorMoore, TAen_US
dc.contributor.authorGust, Den_US
dc.contributor.authorHarris, Gen_US
dc.contributor.authorLindsay, SMen_US
dc.date.accessioned2012-11-26T08:47:41Z-
dc.date.available2012-11-26T08:47:41Z-
dc.date.issued2002en_US
dc.identifier.citationNanotechnology, 2002, v. 13 n. 1, p. 5-14en_US
dc.identifier.issn0957-4484en_US
dc.identifier.urihttp://hdl.handle.net/10722/174824-
dc.description.abstractElectrical contacts between a metal probe and molecular monolayers have been characterized using conducting atomic force microscopy in an inert environment and in a voltage range that yields reversible current-voltage data. The current through alkanethiol monolayers depends on the contact force in a way that is accounted for by the change of chain-to-chain tunnelling with film thickness. The electronic decay constant, β N, was obtained from measurements as a function of chain length at constant force and bias, yielding β N = 0.8 ± 0.2 per methylene over a ± 3 V range. Current-voltage curves are difficult to reconcile with this almost constant value. Very different results are obtained when a gold tip contacts a 1, 8-octanedithiol film. Notably, the current-voltage curves are often independent of contact force. Thus the contact may play a critical role both in the nature of charge transport and the shape of the current-voltage curve.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/nanoen_US
dc.relation.ispartofNanotechnologyen_US
dc.titleMaking electrical contacts to molecular monolayersen_US
dc.typeArticleen_US
dc.identifier.emailCui, XD: xdcui@hku.hken_US
dc.identifier.authorityCui, XD=rp00689en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1088/0957-4484/13/1/302en_US
dc.identifier.scopuseid_2-s2.0-0036471077en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036471077&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume13en_US
dc.identifier.issue1en_US
dc.identifier.spage5en_US
dc.identifier.epage14en_US
dc.identifier.isiWOS:000174283400003-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridCui, XD=10839907500en_US
dc.identifier.scopusauthoridZarate, X=6507745461en_US
dc.identifier.scopusauthoridTomfohr, J=6603628325en_US
dc.identifier.scopusauthoridSankey, OF=7005229707en_US
dc.identifier.scopusauthoridPrimak, A=7003676297en_US
dc.identifier.scopusauthoridMoore, AL=35598466200en_US
dc.identifier.scopusauthoridMoore, TA=7403336040en_US
dc.identifier.scopusauthoridGust, D=7006130117en_US
dc.identifier.scopusauthoridHarris, G=7403158277en_US
dc.identifier.scopusauthoridLindsay, SM=35595480000en_US

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