Patent ID: 9219127
Filing Date: 2015-12-22
Classification: H01L

Abstract:
1. A SiC field effect transistor comprising: a SiC semiconductor layer; and a Metal Insulator Semiconductor (MIS) transistor structure including wherein the MIS transistor structure includes a vertical MIS transistor structure in which the source region and the drift region are spaced from each other vertically and perpendicularly to a major surface of the SiC semiconductor layer with the body region interposed therebetween, wherein the vertical MIS transistor structure further includes: a source trench extending from the major surface of the SiC semiconductor layer to the drift region through the source region and the body region; and a source electrode provided in contact with the source region, the body region and the drift region in the source trench with the barrier forming layer being disposed in a portion of the source electrode contacting the drift region.