Patent ID: 8343239

Claim:
A group III nitride semiconductor manufacturing system, comprising: a reacting vessel having an opening; a crucible disposed in an interior of the reaction vessel and containing a melt including at least a group III metal and an alkali metal; a holding unit supporting the crucible and comprising a rotational shaft extending from the interior of the reaction vessel to an exterior of the reaction vessel through the opening; a rotational shaft cover covering a part of the rotational shaft positioned at the exterior of the reacting vessel and being connected to the reacting vessel at the opening; a rotational driving unit disposed at an outside of the reacting vessel and regulating the rotational shaft; and a supply pipe connected to the rotational shaft cover and supplying a gas including at least nitrogen into a gap between the rotational shaft and the rotational shaft cover, wherein the gas and the melt react to grow a group III nitride semiconductor crystal.