Patent ID: 8882911
Filing Date: 2014-11-11
Classification: C30B,Y10T

Abstract:
1. An apparatus for manufacturing a silicon carbide single crystal by growing the silicon carbide single crystal on a surface of a seed crystal made from a silicon carbide single crystal substrate by supplying a material gas for silicon carbide from below the seed crystal, the apparatus comprising: a cylindrical tube-shaped heating container defining a reaction chamber for growing the silicon carbide single crystal; a disk-shaped base located in the reaction chamber of the heating container and having a first side and a second side opposite to the first side, the seed crystal mounded on the first side of the base; a first purge gas inlet provided to an inner wall of the heating container to cause a purge gas to flow along a surface of the inner wall of the heating container; a purge gas source for supplying the purge gas to the first purge gas inlet; a second purge gas inlet provided to an outer wall of the base to cause the purge gas to flow along a surface of the outer wall of the base; a purge gas introduction mechanism for supporting the base and for supplying the purge gas to the base from the second side of the base, and a ring-shaped first guide portion spaced from the surface of the outer wall of the base to form the second purge gas inlet therebetween, wherein the heating container includes a cylindrical tube portion and a ring-shaped second guide portion spaced from a surface of an inner wall of the tube portion to form the first purge gas inlet therebetween.