Thermodynamic derivation of the hydrodynamical model for charge transport in semiconductors.

A thermodynamic derivation is given of the hydrodynamical model describing charge-carrier transport in semiconductors. The set of moment equations is closed by utilizing the principles of extended thermodynamics. The method of Maxwellian iteraton yields, then, hydrodynamical-like equations with constitutive equations for the heat flux and anisotropic stresses.