Patent ID: 8754441

Claim:
A semiconductor light-emitting device comprising: a substrate; a laminate semiconductor layer comprised of an n-type semiconductor layer formed on the substrate, a light-emitting layer laminated on the n-type semiconductor layer and a p-type semiconductor layer laminated on the light-emitting layer; a concavo-convex part for improving a light extraction efficiency, which is formed on all or a part of a top surface of the laminate semiconductor layer; a high-concentration p-type semiconductor layer having a higher dopant concentration than that of the p-type semiconductor layer, which is laminated on a convex part that constitutes the concavo-convex part of the laminate semiconductor layer; and a translucent current diffusion layer laminated on at least the high-concentration p-type semiconductor layer, wherein the thickness of the high-concentration p-type semiconductor layer is 5 nm or more and 30 nm or less, the dopant concentration of the p-type semiconductor layer is 1×10 19 /cm 3 or more and less than 1×10 20 /cm 3 , the dopant concentration of the high-concentration p-type semiconductor layer is 1×10 20 /cm 3 or more, a concave part, that constitutes the concavo-convex part of the laminate semiconductor layer, reaches the inside of the p-type semiconductor layer, and the p-type semiconductor layer in the concave part is formed with a low-concentration p-type semiconductor region having a lower dopant concentration than that of the p-type semiconductor layer.