Analysis of the Metal Work Function Dependence of Charge Transfer in Contacted Graphene Nanoribbons
In this paper, the analysis of charge injection from metal to a contacted graphene nanoribbon (GNR) is developed by means of a scattering matrix approach. The charge transport, described by the Schrödinger equation in the 2D domain of the GNRs, is solved, together with the 3D Poisson equation for th...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi - SAGE Publishing
2012-11-01
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| Series: | Nanomaterials and Nanotechnology |
| Subjects: | |
| Online Access: | http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/analysis-of-the-metal-work-function-dependence-of-charge-transfer-in-contacted-graphene-nanoribbons |
| Summary: | In this paper, the analysis of charge injection
from metal to a contacted graphene nanoribbon (GNR) is
developed by means of a scattering matrix approach. The
charge transport, described by the Schrödinger equation
in the 2D domain of the GNRs, is solved, together with
the 3D Poisson equation for the potential distribution.
Varying the work function of the metal contacted to the
GNR, alters the so‐called “metal doping”, i.e., the amount
of charge in the GNR. As easily expected, this in turn
affects the I‐V characteristic of a GNR channel across two
electrodes. Interesting effects appear as the contribution
of GNR sub‐band is considered and included in the selfconsistent
calculation. |
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| ISSN: | 1847-9804 |