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Electron drift velocity and mobility in graphene |
Hai-Ming Dong1, Yi-Feng Duan1( ), Fei Huang2,3(), Jin-Long Liu3 |
1. School of Physical Science and Technology, China University of Mining and Technology, Xuzhou 221116, China
2. Low Carbon Energy Institute, China University of Mining and Technology, Xuzhou 221116, China
3. School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou 221116, China |
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Abstract We present a theoretical study of the electric transport properties of graphene-substrate systems. The drift velocity, mobility, and temperature of the electrons are self-consistently determined using the Boltzmann equilibrium equations. It is revealed that the electronic transport exhibits a distinctly nonlinear behavior. A very high mobility is achieved with the increase of the electric fields increase. The electron velocity is not completely saturated with the increase of the electric field. The temperature of the hot electrons depends quasi-linearly on the electric field. In addition, we show that the electron velocity, mobility, and electron temperature are sensitive to the electron density. These findings could be employed for the application of graphene for high-field nano-electronic devices.
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| Keywords
graphene
mobility
nano-electronic devices
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Corresponding Author(s):
Yi-Feng Duan,Fei Huang
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Issue Date: 23 April 2018
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