Patent ID: 9017479
Filing Date: 2015-04-28
Classification: C30B,Y10S,Y10T

Abstract:
1. A production apparatus for growing a nitride single crystal using a solution containing a flux and a raw material, said apparatus comprising: a crucible in which the solution is located; an inner container in which the crucible is located; a heating container in which the inner container is located, the heating container comprising a heating element, a container body equipped with the heating element and a lid fitted to the container body; a pressure vessel in which the heating container is located; and means for charging an atmosphere, comprising at least nitrogen gas, into the pressure vessel, wherein a space is present between the pressure vessel and heating container, a space is present between the heating container and the inner container, and a space is present in the crucible over the solution, wherein all said spaces are in gas communication with each other, wherein the lid has an inclined fitting surface fitted to the container body, and said inclined fitting surface extends in an outwardly downward direction relative to a horizontal plane, wherein a gap is provided between the lid and the container body along said inclined fitting surface, so that nitrogen gas is supplied to the solution through said gap while escape of hot atmosphere in said heating container through said ca along said inclined fitting surface is reduced during growth of said nitride single crystal, and a thickness of said lid of said heating container is 70 mm or greater.