Patent ID: 9680058
Date: 2017-06-13
CPC Classifications: C23C,C30B,H01L

Claim:
1. A group-III nitride structure comprising: a substrate; and a plurality of fine wall-shaped structures disposed to stand on said substrate in a vertical direction relative to a surface of said substrate and extending in an in-plane direction of said substrate, wherein said plurality of fine wall-shaped structures contains a group-III nitride semiconductor crystal, a height of said plurality of fine wall-shaped structures is h and a width of said plurality of fine wall-shaped structures in a direction perpendicular to the vertical direction and the extending direction is d, h is larger than d, d is 600 nm or less, a mask having a plurality of openings is disposed on the surface of said substrate, said mask has a thickness of 2 nm or more and 100 nm or less, each of said plurality of fine wall-shaped structures is disposed at each of said plurality of openings, a length in the extending direction of said plurality of fine wall-shaped structures is longer than d, and said plurality of fine wall-shaped structures are radially disposed in a top view.