Patent ID: 6773505
Filing Date: 2004-08-10
Classification: C30B

Abstract:
A method for a sublimation growth of at least one SiC single crystal, which comprise the steps of:introducing a stock of solid SiC into a storage area of a crucible; introducing at least one SiC seed crystal into at least one crystal area of the crucible; bringing the crucible to growth conditions during a starting phase; initially evacuating the crucible, and then filling the crucible with an inert gas, until a growth pressure is reached in the crucible, during the starting phase; during the starting phase, initially heating the crucible to an intermediate temperature and then, in a heat-up phase, starting from the intermediate temperature, heating the crucible to a growth temperature at a heating rate of at most 20Â° C./min; and growing the SiC single crystal, during a growth phase, by the stock of solid SiC being at least partially sublimed and converted into an SiC gas phase with SiC gas-phase components and the SiC gas-phase components being at least partially transported to the SiC seed crystal, where the SiC gas-phase components are deposited for growing the SiC single crystal.