Gallium antimonide field-effect transistor

摘要

A complementary MISFET uses gallium antimonide as the active material to utilize the high mobilities of both holes and electrons in such material. To avoid interfacial states at the gate interface, the gate insulator is an epitaxial composite layer formed by an appropriate superlattice of which the portion adjacent the channel region is free of intentional doping. The superlattice may comprise, for example, alternating layers of aluminum antimonide and aluminum arsenide or of aluminum antimonide and gallium arsenide.