Patent ID: 6860943
Filing Date: 2005-03-01
Classification: C30B,H01L

Abstract:
1. A method for producing a Group III nitride compound semiconductor comprising: forming pits, in which a portion of an uppermost layer of a first Group III nitride compound semiconductor layer comprising one or more sub-layers, the portion including lattice defects, is subjected to treatment by use of at least one of a solution and a vapor which corrodes the portion more easily than it corrodes a portion of the uppermost layer including no lattice defects; and laterally growing a second Group III nitride compound semiconductor layer through vertical and lateral epitaxial overgrowth around nuclei as seeds for crystal growth which are on flat portions of the uppermost layer of the first Group III nitride compound semiconductor layer, but not on portions of the uppermost layer that define pits formed through said forming pits.