Patent ID: 9076707
Filing Date: 2015-07-07
Classification: H01L,Y02E,Y02P

Abstract:
1. A semiconductor device, comprising: a substrate layer; a plurality of doped semiconductor layers including a first semiconductor layer doped with a first dopant disposed above said substrate and a second semiconductor layer doped with a second dopant disposed above said first semiconductor layer and proximal thereto; a first depletion region in said first semiconductor layer proximal to said second semiconductor layer; a second depletion region in said second semiconductor layer proximal to said first semiconductor layer; said first and second semiconductor layers being ion implanted in selected regions thereof and having an ion implantation profile in each of said first and second semiconductor layers at a generally positive lateral profile angle with respect to a normal to said first and second semiconductor layers; and said ion implantation profile further defining interior regions of said first and second semiconductor layers that are not ion implanted, and exterior regions of said first and second semiconductor layers that are ion implanted, said interior non-implanted region of the first semiconductor layer having a larger area than said interior non-implanted region of the second semiconductor layer.