Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Li induced effects in the core level and pi-band electronic structure of graphene grown on C-face SiC
Linköpings universitet, Institutionen för fysik, kemi och biologi, Halvledarmaterial. Linköpings universitet, Tekniska fakulteten.
Linköpings universitet, Institutionen för fysik, kemi och biologi. Linköpings universitet, Tekniska fakulteten.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Halvledarmaterial. Linköpings universitet, Tekniska fakulteten.
2015 (Engelska)Ingår i: Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films, ISSN 0734-2101, E-ISSN 1520-8559, Vol. 33, nr 6, artikel-id 061405Artikel i tidskrift (Refereegranskat) Published
Resurstyp
Text
Abstract [en]

Studies of the effects induced in the electronic structure after Li deposition, and subsequent heating, on graphene samples prepared on C-face SiC are reported. The as prepared graphene samples are essentially undoped, but after Li deposition, the Dirac point shifts down to 1.2 eV below the Fermi level due to electron doping. The shape of the C 1s level also indicates a doping concentration of around 10(14) cm(-2) after Li deposition, when compared with recent calculated results of core level spectra of graphene. The C 1s, Si 2p, and Li 1s core level results show little intercalation directly after deposition but that most of the Li has intercalated after heating at 280 degrees C. Heating at higher temperatures leads to desorption of Li from the sample, and at 1030 degrees C, Li can no longer be detected on the sample. The single pi-band observable from multilayer C-face graphene samples in conventional angle resolved photoelectron spectroscopy is reasonably sharp both on the initially prepared sample and after Li deposition. After heating at 280 degrees C, the p-band appears more diffuse and possibly split. The Dirac point becomes located at 0.4 eV below the Fermi level, which indicates occurrence of a significant reduction in the electron doping concentration. Constant energy photoelectron distribution patterns extracted from the as prepared graphene C-face sample and also after Li deposition and heating at 280 degrees C look very similar to earlier calculated distribution patterns for monolayer graphene. (C) 2015 Author(s).

Ort, förlag, år, upplaga, sidor
American Institute of Physics (AIP), 2015. Vol. 33, nr 6, artikel-id 061405
Nationell ämneskategori
Kemi
Identifikatorer
URN: urn:nbn:se:liu:diva-123832DOI: 10.1116/1.4927856ISI: 000365503800032OAI: oai:DiVA.org:liu-123832DiVA, id: diva2:892863
Anmärkning

Funding Agencies|Swedish Natural Research Council [621-2011-4252]; Swedish Natural Research Council (Linnaeus Grant)

Tillgänglig från: 2016-01-11 Skapad: 2016-01-11 Senast uppdaterad: 2017-12-01Bibliografiskt granskad

Open Access i DiVA

fulltext(525 kB)47 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 525 kBChecksumma SHA-512
def63ccaa80d3c7efa117f615f7be6cb66fe7c6dd615884dae9be0a938e618d1635db6533d1e1cd1823dc351101fc8079ba55a5c2434e553fc90ab92d8a7b430
Typ fulltextMimetyp application/pdf

Övriga länkar

Förlagets fulltext

Sök vidare i DiVA

Av författaren/redaktören
Johansson, Leif IXia, ChaoJacobi, Chariya
Av organisationen
HalvledarmaterialTekniska fakultetenInstitutionen för fysik, kemi och biologi
I samma tidskrift
Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films
Kemi

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 47 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 116 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf