Effective doping of single-layer graphene from underlyingsubstrates
- 3 March 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 79 (11), 115402
- https://doi.org/10.1103/physrevb.79.115402
Abstract
When a single-layer graphene (SLG) is on substrates, the charge exchange at their interface results in a dipole, which direction strongly depends on the contact potential difference between the SLG and the substrates. Due to the longer experimental charge screening length of SLG than its thickness, the charge redistribution imposes effective or doping to SLG films. The substrate-dependent doping of SLG films is further confirmed by Raman and electrical measurements. Also, the unique electronic structures of SLG films make them sensitive to the doping rather than effective gating from the substrates.
Keywords
This publication has 29 references indexed in Scilit:
- Doping Graphene with Metal ContactsPhysical Review Letters, 2008
- Monitoring dopants by Raman scattering in an electrochemically top-gated graphene transistorNature Nanotechnology, 2008
- Phase-Coherent Transport in Graphene Quantum BilliardsScience, 2007
- Detection of individual gas molecules adsorbed on grapheneNature Materials, 2007
- Electric Field Effect Tuning of Electron-Phonon Coupling in GraphenePhysical Review Letters, 2007
- Bipolar supercurrent in grapheneNature, 2007
- Breakdown of the adiabatic Born–Oppenheimer approximation in grapheneNature Materials, 2007
- Strong Suppression of Weak Localization in GraphenePhysical Review Letters, 2006
- Experimental observation of the quantum Hall effect and Berry's phase in grapheneNature, 2005
- Electric Field Effect in Atomically Thin Carbon FilmsScience, 2004