Patent ID: 8293011
Filing Date: 2012-10-23
Classification: C30B,Y10T

Abstract:
1. A method for growing a Group III nitride semiconductor crystal by sublimating a material containing a Group III nitride semiconductor and depositing a sublimated material gas, comprising the steps of: preparing a chamber including a heat-shielding portion for shielding heat radiation from said material therein; arranging said material on one side of said heat-shielding portion in said chamber; and growing said Group III nitride semiconductor crystal by heating said material to be sublimated, and depositing said material gas on the other side of said heat-shielding portion in said chamber, wherein said heat-shielding portion includes a plurality of plate-shaped portions, and said plurality of plate-shaped portions are positioned between a first room for arranging said material and a second room for growing said Group III nitride semiconductor crystal, and are arranged so that a divided third room is formed in each of said first and second rooms, having through holes for allowing said material gas to pass through, and wherein the step of growing said Group III nitride semiconductor crystal comprises the steps of: depositing said material gas on at least said plate-shape portion in said third room as other Group III nitride semiconductor crystal; and growing said Group III nitride semiconductor crystal in said second room by sublimating said other Group III nitride semiconductor crystal and depositing said material gas including sublimated gas of said other Group III nitride semiconductor crystal.