Patent ID: 8679254

Claim:
A vapor phase epitaxy apparatus of a group III nitride semiconductor, comprising: a susceptor for holding a substrate; a member facing the susceptor; a heater for heating the substrate; a reactor formed of a gap between the susceptor and the opposite face of the susceptor; a raw material gas-introducing portion for supplying a raw material gases from a central portion of the reactor toward a peripheral portion of the reactor; and a reacted gas-discharging portion, wherein: the member facing the susceptor has means for flowing a coolant therein; the raw material gas-introducing portion has a plurality of gas ejection orifices formed of such a constitution that the gas ejection orifices are partitioned in a vertical direction with a disk-like partition; and at least one of the gas ejection orifices has such a constitution that the gas ejection orifice is partitioned in a circumferential direction with a plurality of columnar partitions.