Patent ID: 7767021

Claim:
A growing method of a SiC single crystal comprising the steps of: performing a first thermal treatment on a SiC source for decreasing a specific surface area, increasing a ratio of α-phase and making a mole fraction of C greater than that of Si in the source; performing a second thermal treatment on the SiC source, high purity Si being added in performing the second thermal treatment on the SiC source; providing the SiC source into a crucible; arranging a single SiC seed in the crucible; growing the SiC single crystal by heating the SiC source; wherein the first thermal treatment of the SiC source is carried out at a temperature of 1500 to 2600° Celsius and at a pressure of 50 to 4000 Torr; and after performing the first thermal treatment a value of A cry /(A cry +A porous ) ranges from about 0.8600 to about 0.8625 for the SiC source, where A cry is an area percent of a crystal powder and A porous is an area percent of a porous powder.