Patent ID: 8946788
Filing Date: 2015-02-03
Classification: H01L

Abstract:
1. A vertical JFET formed by a method comprising: providing a GaN-based substrate having a surface and a first electrical contact opposing the surface, the GaN-based substrate characterized by a doping density of an n-type dopant greater than about 1×10 forming a GaN-based drift layer coupled to the GaN-based substrate and operable to conduct current in a direction substantially orthogonal to the surface, wherein forming the GaN-based drift layer comprises: forming an n-type channel layer coupled to the GaN-based drift layer; forming an n-contact layer coupled to the GaN-based drift layer and substantially parallel to the surface; forming a second electrical contact electrically coupled to the n-contact layer; forming a p-type gate region electrically coupled to the n-type channel layer; and forming a third electrical contact electrically coupled to the p-type gate region.