Wide bandgap semiconducting materials are promising candidates for high-pow
er, high-temperature, microwave and optoelectronic devices because of their
superior thermal and electrical properties in comparison to conventional s
emiconductors. Recent developments in SIC and GaN materials and processing
have enabled the demonstration of semiconductor devices with dramatically i
mproved performance. Examples of these developments and new wide bandgap de
vices are presented. (C) 1999 Published by Elsevier Science Ltd. All rights
reserved.