A Hydrodynamic Model for Transport in Semiconductors without Free Parameters

Hydrodynamic model for charge carriers involving strong ionization in semiconductors

A set of hydrodynamic equations modeling strong ionization in semiconductors is formally derived from a kinetic framework. To that purpose, a system of Boltzmann transport equations governing the distribution functions of conduction electrons and holes is considered. The charge carriers obey a degenerate gas statistics and their kinetic energy relations are arbitrary. The umklapp collisions are...

Extraction of model parameters for reactive solute transport

In the present study, tried to examine the reactive solute relationships for transport and degradation processes through the rockfill media. By applying the analytical solution of reactive transport, the 1st to 3rd theoretical temporal moments have been extracted then, by using two methods of curve fitting and temporal moment matching, the coefficients of dispersion and degradation have been ex...

A Discrete BGK Approximation of Hydrodynamic Equations for Semiconductors

Large Time Behavior of the Solutions to a Hydrodynamic Model for Semiconductors

We establish the global existence of smooth solutions to the Cauchy problem for the one{dimensional isentropic Euler{Poisson (or hydrodynamic) model for semiconductors for small initial data. In particular we show that, as t ! 1, these solutions converge to the stationary solutions of the drift{diiusion equations. The existence and uniqueness of stationary solutions to the drift-diiusion equati...

Non-Empirical Tuning in DFT: Improvements for Modeling Charge Transport Parameters in Organic Semiconductors