We use Dirichlet boundary conditions for the even moments stemming from a ``cold'' Maxwellian distribution. We also assume local charge neutrality at the boundaries, that is, the carrier density is equal to the doping .

The equilibrium values are a function of the lattice temperature and for parabolic band we obtain ([Gri02], page 17):

(2.49) | ||

(2.50) | ||

(2.51) |

** Previous:** 2.2.3 Closure Problem
**Up:** 2.2 The Method of
** Next:** 2.3 Closure Relations for

R. Kosik: Numerical Challenges on the Road to NanoTCAD