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Article: Bandgap-selective chemical doping of semiconducting single-walled carbon nanotubes

TitleBandgap-selective chemical doping of semiconducting single-walled carbon nanotubes
Authors
Issue Date2004
Citation
Nanotechnology, 2004, v. 15, n. 12, p. 1844-1847 How to Cite?
AbstractBandgap-selective p doping of single-walled carbon nanotubes (SWCNTs) in aqueous surfactant suspensions is reported. Nanotubes with narrower bandgaps are preferentially doped by hexacyanoferrate (III), as observed by optical absorption. The bandgap absorption characteristics, which are controlled by the chemical potential, can be reversibly adjusted by controlling the oxidation potential of the dopants through the pH value. The origin of the selective modification of bandgap absorption is electron transfer between the carbon nanotubes and the hexacyanoferrate (III), which preferentially depopulates the valence band in narrower gap nanotubes.
Persistent Identifierhttp://hdl.handle.net/10722/298006
ISSN
2023 Impact Factor: 2.9
2023 SCImago Journal Rankings: 0.631
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, Lain Jong-
dc.contributor.authorNicholas, R. J.-
dc.date.accessioned2021-04-08T03:07:27Z-
dc.date.available2021-04-08T03:07:27Z-
dc.date.issued2004-
dc.identifier.citationNanotechnology, 2004, v. 15, n. 12, p. 1844-1847-
dc.identifier.issn0957-4484-
dc.identifier.urihttp://hdl.handle.net/10722/298006-
dc.description.abstractBandgap-selective p doping of single-walled carbon nanotubes (SWCNTs) in aqueous surfactant suspensions is reported. Nanotubes with narrower bandgaps are preferentially doped by hexacyanoferrate (III), as observed by optical absorption. The bandgap absorption characteristics, which are controlled by the chemical potential, can be reversibly adjusted by controlling the oxidation potential of the dopants through the pH value. The origin of the selective modification of bandgap absorption is electron transfer between the carbon nanotubes and the hexacyanoferrate (III), which preferentially depopulates the valence band in narrower gap nanotubes.-
dc.languageeng-
dc.relation.ispartofNanotechnology-
dc.titleBandgap-selective chemical doping of semiconducting single-walled carbon nanotubes-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1088/0957-4484/15/12/026-
dc.identifier.scopuseid_2-s2.0-11144279942-
dc.identifier.volume15-
dc.identifier.issue12-
dc.identifier.spage1844-
dc.identifier.epage1847-
dc.identifier.isiWOS:000225843200026-
dc.identifier.issnl0957-4484-

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