Patent ID: 7637998
Filing Date: 2009-12-29
Classification: C30B

Abstract:
1. A method for producing single crystal silicon carbide, comprising: arranging a single crystal silicon carbide seed crystal and a polycrystal silicon carbide substrate in adjacent horizontal layers, in a crucible; providing a source of metallic silicon in the crucible; placing the crucible in a closed container; heating the container with arranged layers and source of metallic silicon to a at least a temperature sufficient to melt the metallic silicon; forming a metallic silicon melt layer interposed and filing the space between facing surfaces of the single crystal silicon carbide seed crystal and the polycrystal silicon carbide substrate; forming single crystal silicon carbide on the surface of the single crystal silicon carbide seed crystal via liquid phase epitaxial growth; wherein the maximum distance between the facing surfaces of the single crystal silicon carbide seed crystal and the polycrystal silicon carbide substrate is 50 micrometers, and the temperature of the single crystal silicon carbide seed crystal is not different from the temperature of the polycrystal silicon carbide substrate.