Silicon Carbide Bulk Crystal Growth Modeling from Atomic Scale to Reactor Scale

摘要

The state of the art of silicon carbide crystal growth modeling is explained from the two aspects. One is the technical problems of SiC bulk single crystal growth process by sublimation method. Numerical modeling can contribute on the reactor design and process condition optimization. Then the shape of SiC grown crystal (diameter and length) can be controlled by modifying the growth crucible design. Second one is the theoretical problem of SiC polytype control. By calculating the bulk crystal energy of each polytype, and surface energy of each possible surface during growth, it is pointed out that growin surface energy has effects on the polytype stability of SiC crystals.