Patent ID: 9171923
Filing Date: 2015-10-27
Classification: H01L

Abstract:
1. A method for fabricating a merged P-i-N Schottky (MPS) diode in gallium nitride (GaN) based materials, the method comprising: providing a free-standing n-type GaN-based substrate having a first surface and a second surface; forming an n-type GaN-based epitaxial layer coupled to the first surface of the free-standing n-type GaN-based substrate; implanting a p-type dopant into the n-type GaN-based epitaxial layer to form a GaN-based structure having a plurality of implanted p-type GaN-based regions with at least one n-type GaN-based epitaxial region disposed between adjacent ones of the plurality of implanted p-type GaN-based regions; and forming a first metallic structure electrically coupled to one or more of the plurality of implanted p-type GaN-based regions and the at least one n-type GaN-based epitaxial region, wherein a Schottky contact is created between the first metallic structure and the at least one n-type GaN-based epitaxial region.