Universiti Teknologi Malaysia Institutional Repository

Graphene nanoribbon fermi energy model in parabolic band structure

Ahmadi, Mohammad Taghi and Ismail, Razali (2010) Graphene nanoribbon fermi energy model in parabolic band structure. In: ISMS 2010 - UKSim/AMSS 1st International Conference on Intelligent Systems, Modelling and Simulation, 27-29 Jan. 2010, Liverpool, United Kingdom.

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Official URL: http://dx.doi.org/10.1109/ISMS.2010.78

Abstract

Graphene nanoribbon (GNR) has possibility to overcome the carbon nanotube chirality challenge as a nanoscale device channel. Because of one dimensional behavior of GNR, carrier statistic study is attractive. More research work has been done on carrier statistic study of GNR especially in Boltzmann approximation (Nondegenerate regime). Based on quantum confinement effect to improve the fundamental studies in degenerate regime we focused on, parabolic part of GNR band energy. Our method demonstrates that the band energy of GNR near to the minimum band energy is parabolic. In this part of the band structure, Fermi-Dirac integrals are sufficient for carrier concentration study. Similar to any other one dimensional device in nondegenerate regime Fermi energy shows temperature dependent behavior, on the other hand normalized Fermi energy with respect to the band edge is function of carrier concentration in the degenerate regime. However band structure is not parabolic in other parts of the band energy and numerical solution of GNR Femi-Dirac integrals are needed.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:fermi energy, graphene nanoribbon, carrier statistics, parabolic band structure
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:27923
Deposited By: Liza Porijo
Deposited On:29 Aug 2012 03:15
Last Modified:29 Aug 2012 03:17

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