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Numerical analysis of carrier statistics in low-dimensional nanostructure devices

Taghi Ahmadi, M. and Riyadi, Munawar A. and Ismail, Razali and Arora, Vijay K. and Saad, Ismail (2009) Numerical analysis of carrier statistics in low-dimensional nanostructure devices. Jurnal Teknologi, 50 (D). pp. 109-117. ISSN 2180-3722

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Abstract

The carrier statistics for low-dimensional nanostructure is elaborated. The density of state (DOS) is proportional to d D ? where d is the dimensionality of the nanostructure and D ? is the De- Broglie wavelength proportion of Fermi-Dirac (FD) integral that covers the carrier statistics to all degeneracy level. In the non-degenerate regime the results replicate what is expected from the Boltzmann statistics. However, the results vary in degenerate regime. The results for all dimensions are numerically analyzed and compared for all three Cartesian directions. With appropriate DOS, the carrier concentration in all dimensions is obtained based on the FD statistic. Fermi energy with respect to band edge is a function of temperature that is independent of the carrier concentration in the non-degenerate regime. In the strongly degenerate regime, the Fermi energy is a function of carrier concentration appropriate for given dimensionality, but is independent of temperature.

Item Type:Article
Uncontrolled Keywords:carrier statistics, carrier concentration, one dimensional devices, degenerate and nondegenerate carrier
Subjects:T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:21029
Deposited By: Ramli Haron
Deposited On:14 Jan 2012 05:08
Last Modified:21 Nov 2013 03:38

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