Patent ID: 7811839
Filing Date: 2010-10-12
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor light emitting device comprising (i) a semiconductor layer with convex portions in a shape selected from a cone and a truncated cone and (ii) electrodes, said method comprising the steps of: (a) growing a semiconductor layer on a substrate, (b) forming on the semiconductor layer a region having particles with an average particle diameter of 0.01 to 10 μm and a surface density of 2×10 (c) dry-etching the semiconductor layer to form the convex portions in the shape selected from a cone and a truncated cone, wherein the semiconductor layer is made of metal nitride, and wherein in the case of the convex portions with the shape of the truncated cone, the convex portions have a height of from 0.05 to 5.0 μm and a bottom base diameter of from 0.05 to 2.0 μm; in case of the convex portions with the shape of the cone, the convex portions have a height of from 0.05 to 5.0 μm and a base diameter of from 0.05 to 2.0 μm.