Comparative studies of hydrodynamic and energy transport models

An energy transport model has been numerically implemented in the device simulator hfields. The transport parameters for the standard hydrodynamic model and the energy transport model are calibrated by means of damocles, a two-dimensional Monte Carlo Boltzmann equation solver. We analyse the relative merits of these two models by comparing their predictions of the energy and velocity distributions for a bipolar transistor and a ballistic diode. In the cases presented, the hydrodynamic model is found to agree with the Monte Carlo results more closely than the energy transport model. © 1994, MCB UP Limited