Three-dimensional finite-element thermal simulation of GaN-based HEMTs

The aim of this paper is to show and discuss results of three-dimensional finite-element thermal simulation of GaN HEMT structures. HEMTs differing by geometry, substrate material, passivation, and cooling strategy are simulated and compared in order to give a picture of the complex interplay of factors that must be reckoned with for proper thermal modeling and management. (C) 2009 Elsevier Ltd. All rights reserved.