Patent ID: 9523156
Filing Date: 2016-12-20
CPC Classification: C30B,Y10T

Claim Text:
1. A method for producing a SiC single crystal by a solution process in which a seed crystal substrate held on a seed crystal holding shaft is contacted with a Si—C solution having a temperature gradient such that the temperature decreases from the interior toward the surface, to cause crystal growth of the SiC single crystal, the method comprising: lowering the temperature of the Si—C solution at the outer peripheral section directly below the interface with the crystal growth plane to be lower than the temperature of the Si—C solution at the center section directly below the interface with the crystal growth plane, and causing the Si—C solution to flow from the center section directly below the interface with the crystal growth plane to the outer peripheral section directly below the interface with the crystal growth plane, wherein lowering the temperature of the Si—C solution comprises forming a meniscus between the seed crystal substrate and the Si—C solution by raising the seed crystal substrate and holding the seed crystal substrate at a position where a bottom face of the seed crystal substrate is higher than a liquid surface of the Si—C solution after the seed crystal substrate is contacted with the Si—C solution.