Table of Contents
VLSI Design
Volume 8, Issue 1-4, Pages 527-532

A Hydrodynamic Model for Transport in Semiconductors without Free Parameters

1Dipartimento di Fisica, Università di Catania, Corso Italia 57, Catania I-95129, Italy
2Dipartimento di Matematica, Università di Catania, Viale A.Doria 6, Catania I-95125, Italy

Copyright © 1998 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We derive, using the Entropy Maximum Principle, an expression for the distribution function of carriers as a function of a set of macroscopic quantities (density, velocity, energy, deviatoric stress, energy flux). Given the distribution function, we obtain, for these macroscopic quantities, a hydrodynamic model in which all the constitutive functions (fluxes and collisional productions) are explicitely computed starting from their kinetic expressions. We have applied our model to the simulation of some onedimensional submicron devices in a temperature range of 77–300 K, obtaining results comparable with Monte Carlo. Computation times are of order of few seconds for a picosecond of simulation.