Bi-Dimensional Simulation of the Simplified Hydrodynamicand Energy-Transport Models Heter junctionSemiconductors Devices Using Mixed Finite Elements

摘要

We study the application of the mixed finite elements method (MFE) for the bidimensionalsimulation of the simplified hydrodynamic and energy-transport models.The two main points are the use of entropic variables which gives a symmetric positivedefinite problem and a coupled computation of the equations for electrons whichrequires a generalization of the MFE method for vector valued problems. We givenumerical results on JFET and HEMT devices.