Patent ID: 8323999
Filing Date: 2012-12-04
Classification: H01L

Abstract:
1. A method of manufacturing a gallium nitride-based III-V group compound semiconductor device, the method comprising: forming a gallium nitride-based semiconductor layer comprising P and N contact structures on a substrate; and forming an ohmic electrode layer on the gallium nitride-based semiconductor layer by depositing a contact metal layer, reflective metal layer, a diffusion barrier layer, and a bonding metal layer, wherein forming the ohmic electrode layer comprises sequentially depositing the contact metal layer, the reflective metal layer, and the diffusion barrier layer on the gallium nitride based-semiconductor layer, wherein the reflective metal layer is deposited directly on the contact metal layer, and the diffusion barrier layer is deposited directly on the reflective metal layer, and wherein the bonding metal layer comprises the same material as that of the contact metal layer.