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Correlation between morphology and transport properties of quasi-free-standing monolayer graphene

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 نشر من قبل Stefan Heun
 تاريخ النشر 2014
  مجال البحث فيزياء
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We investigate the morphology of quasi-free-standing monolayer graphene (QFMLG) formed at several temperatures by hydrogen intercalation and discuss its relationship with transport properties. Features corresponding to incomplete hydrogen intercalation at the graphene-substrate interface are observed by scanning tunneling microscopy on QFMLG formed at 600 and 800{deg}C. They contribute to carrier scattering as charged impurities. Voids in the SiC substrate and wrinkling of graphene appear at 1000{deg}C, and they decrease the carrier mobility significantly.



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