Abstract
This paper reviews the development of bulk SiC single crystals grown by physical vapor transport method, including the polytype control, defects and doped consideration. In addition, defects in commercial 6H-SiC wafer, such as micropipes, hexagonal voids and subgrain boundaries, are examined by transmission optical microscopy, X-ray synchrotron topography in back-reflection geometry and high-resolution X-ray diffraction methods.
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