Patent ID: 9136345
Filing Date: 2015-09-15
Classification: H01L

Abstract:
1. A method to produce high electron mobility transistors with Boron implanted isolation comprises the following steps: forming a nucleation layer on a substrate, wherein said substrate is made of SiC, Si, Diamond or Sapphire; forming a buffer layer on said nucleation layer; forming a barrier layer on said buffer layer; coating a photoresist layer on said barrier layer; photomasking at least one isolation region on the surface of said photoresist layer; eliminating said photoresist layer within said at least one isolation region by exposure and development; executing an ion implantation process plural times, wherein said ion implantation process includes the following steps: eliminating the rest of said photoresist layer by exposure and development; forming a source on one end of said barrier layer; forming a drain on the other end of said barrier layer; and forming a gate on said barrier layer, wherein said gate is between said source and said drain.