Patent ID: 8842710
Filing Date: 2014-09-23
Classification: H01L,H01S

Abstract:
1. A semiconductor device comprising: a semiconductor layer in which a region with different conductivity distributions is formed in an in-plane direction of said semiconductor layer, wherein said semiconductor layer is configured of a semiconductor layer containing a dopant, and at least a part of a hole of a concave portion of a concave and convex structure formed in said semiconductor layer is filled up with a material forming said semiconductor layer by mass transport, and wherein a conductivity distribution reflecting said concave and convex structure is formed in said semiconductor layer, wherein a first region corresponding to the concave portion of said concave and convex structure filled up with said material forming said semiconductor layer and a second region corresponding to the convex portion of said concave and convex structure have a same element as dopant, and wherein a concentration of said same element in said first region is lower than that in said second region.