Patent ID: 8216924
Filing Date: 2012-07-10
Classification: H01L

Abstract:
1. A method of forming a Group III-nitride transistor device, the method comprising: implanting dopant ions into a stacked Group III-nitride channel layer and Group III-nitride barrier layer to form source/drain regions therein with a channel region therebetween, wherein the channel layer has a lower bandgap energy than the barrier layer along a heterojunction interface between the channel layer and the barrier layer, and the source/drain regions have a lower defect centers energy than the channel region; and exposing the source/drain regions and the channel region to a laser beam with a wavelength having a photon energy that is less than the bandgap energy of the channel region and higher than the defect centers energy of the source/drain regions to locally heat the source/drain regions to a temperature that anneals the source/drain regions.