Modeling of transport through submicron semiconductor structures: A direct solution to the Poisson-Boltzmann equations

Details Modeling of transport through submicron semiconductor structures: A direct solution to the Poisson-Boltzmann equations Modeling of transport through submicron semiconductor structures: A direct solution to the Poisson-Boltzmann equations

2004-11-18

arxiv.org/abs/cond-mat/0411499v1

J. Comp. Electronics 3, 215 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures, Contribution to the International Workshop on Computational Electronics (IWCE-10)

Scientific paper

We report on a computational approach based on the self-consistent solution of the steady-state Boltzmann transport equation coupled with the Poisson equation for the study of inhomogeneous transport in deep submicron semiconductor structures. The nonlinear, coupled Poisson-Boltzmann system is solved numerically using finite difference and relaxation methods. We demonstrate our method by calculating the high-temperature transport characteristics of an inhomogeneously doped submicron GaAs structure where the large and inhomogeneous built-in fields produce an interesting fine structure in the high-energy tail of the electron velocity distribution, which in general is very far from a drifted-Maxwellian picture.

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