Patent ID: 8530256
Filing Date: 2013-09-10
Classification: H01L

Abstract:
1. A semiconductor device production process comprising: (a) forming on a growth substrate a void-containing layer that is made of a group III nitride compound semiconductor and contains voids, (b) forming on the void-containing layer an n-type layer that is made of an n-type group III nitride compound semiconductor and serves to close the voids, (c) forming on the n-type layer an active layer made of a group III nitride compound semiconductor, (d) forming on the active layer a p-type layer made of a p-type group III nitride compound semiconductor, (e) bonding a support substrate above the p-type layer, (f) peeling off the growth substrate at the boundary where the void are produced, and (g) planarizing the n-type layer, wherein (b) above comprises (b1) forming part of the n-type layer under conditions where horizontal growth is relatively weak, and (b2) forming the remaining part of the n-type layer under conditions where horizontal growth is relatively strong.