Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Carbon nanotube capacitance model in degenerate and nondegenerate regimes
AU - Ahmadi, M. T.
AU - Webb, J. F.
AU - Amin, N. A.
AU - Mousavi, S. M.
AU - Sadeghi, Hatef
AU - Neilchiyan, M. R.
AU - Ismail, Razi
PY - 2011/6/20
Y1 - 2011/6/20
N2 - In this work, fundamental results on carrier statistics in a carbon nanotube treated as a one-dimensional material are presented. Also the effect of degeneracy on the capacitance of the carbon nanotube channel in a carbon nanotube field effect transistor is discussed. A quantum capacitance as well as a classical capacitance is revealed. Furthermore it is shown that for low gate voltage, the total capacitance is equivalent to the classical capacitance but for high gate voltage it is equivalent to the quantum capacitance. We predict that in the nondegenerate regime, the total capacitance is equivalent to the classical capacitance and that the quantum capacitance can be neglected, whereas only quantum capacitance needs to be taken into account in the calculation of the total capacitance in the degenerate regime.
AB - In this work, fundamental results on carrier statistics in a carbon nanotube treated as a one-dimensional material are presented. Also the effect of degeneracy on the capacitance of the carbon nanotube channel in a carbon nanotube field effect transistor is discussed. A quantum capacitance as well as a classical capacitance is revealed. Furthermore it is shown that for low gate voltage, the total capacitance is equivalent to the classical capacitance but for high gate voltage it is equivalent to the quantum capacitance. We predict that in the nondegenerate regime, the total capacitance is equivalent to the classical capacitance and that the quantum capacitance can be neglected, whereas only quantum capacitance needs to be taken into account in the calculation of the total capacitance in the degenerate regime.
KW - Carbon nanotubes
KW - quantum capacitance
KW - degenerate
KW - nondegenerate
KW - field effect transistor
KW - INAS QUANTUM DOTS
KW - VOLTAGE PROFILE
KW - SPECTROSCOPY
KW - PHYSICS
U2 - 10.1063/1.3592461
DO - 10.1063/1.3592461
M3 - Journal article
VL - 1337
SP - 173
EP - 176
JO - AIP Conference Proceedings
JF - AIP Conference Proceedings
SN - 0094-243X
T2 - 4th Global Conference on Power Control and Optimization
Y2 - 2 December 2010 through 4 December 2010
ER -