Patent ID: 8008173
Filing Date: 2011-08-30
Classification: C30B

Abstract:
1. A method of manufacturing a semiconductor device incorporating a III nitride single crystal, comprising: obtaining a III nitride single crystal according to a method selected from any one of: (a) a III nitride single-crystal manufacturing method wherein a liquid layer of 200 μm or less thickness is formed in between a substrate and a III nitride source-material baseplate, and III nitride single crystal is grown onto the face of said substrate on its liquid-layer side; (b) a method according to (a), wherein said substrate in at least a superficial layer along the liquid layer is formed of a III nitride single crystal, and said III nitride source-material baseplate is formed of a III nitride polycrystal; (c) a method according to (a), wherein said substrate in at least a superficial layer along the liquid layer, and said III nitride source-material baseplate are formed of a III nitride single crystal, and the face of said substrate on its liquid-layer side is a Group-III-atom surface, and the face of said III nitride source-material baseplate on its liquid-layer side is a nitrogen-atom surface; (d) a method according to (a), wherein said liquid layer includes an element of at least one kind selected from the group consisting of elements constituting said III nitride single crystal; or (e) any combination of methods (a) to (d); and depositing one or more layers containing at least one selected from Ga, In and Al onto the obtained III nitride single-crystal.