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Träfflista för sökning "(LAR1:liu) pers:(Syväjärvi Mikael) pers:(Eriksson Jens) srt2:(2012)"

Sökning: (LAR1:liu) pers:(Syväjärvi Mikael) pers:(Eriksson Jens) > (2012)

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1.
  • Eriksson, Jens, et al. (författare)
  • The influence of substrate morphology on thickness uniformity and unintentional doping of epitaxial graphene on SiC
  • 2012
  • Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 100:24, s. 241607-
  • Tidskriftsartikel (refereegranskat)abstract
    • A pivotal issue for the fabrication of electronic devices on epitaxial graphene on SiC is controlling the number of layers and reducing localized thickness inhomogeneities. Of equal importance is to understand what governs the unintentional doping of the graphene from the substrate. The influence of substrate surface topography on these two issues was studied by work function measurements and local surface potential mapping. The carrier concentration and the uniformity of epitaxial graphene samples grown under identical conditions and on substrates of nominally identical orientation were both found to depend strongly on the terrace width of the SiC substrate after growth.
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2.
  • Yakimova, Rositsa, et al. (författare)
  • Progress in 3C-SiC growth and novel applications
  • 2012
  • Ingår i: Materials Science Forum Vol 711. - : Trans Tech Publications Inc.. ; , s. 3-10
  • Konferensbidrag (refereegranskat)abstract
    • Recent research efforts in growth of 3C-SiC are reviewed. Sublimation growth is addressed with an emphasis on the enhanced understanding of polytype stability in relation to growth conditions, such as supersaturation and Si/C ratio. It is shown that at low temperature/supersaturation spiral 6H-SiC growth is favored, which prepares the surface for 3C-SiC nucleation. Provided the supersaturation is high enough, 3C-SiC nucleates as two-dimensional islands on terraces of the homoepitaxial 6H-SiC. Effect of different substrate surface preparations is considered. Typical extended defects and their electrical activity is discussed. Finally, possible novel applications are outlined.
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