Application of a Fine Grain 3C-SiC Powder Source Material during PVT Growth of 4H-SiC Crystals

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Abstract:

We have investigated the applicability of a new type of 3C-SiC powder source material during PVT growth which consist of a particle size of ca. 10 µm (aggregates up to ca. 150 µm). In-situ X-ray visualization of 75 mm and 100 mm PVT growth runs showed a smooth SiC powder consumption during growth. Using Raman spectroscopy, we have found a high 4H-SiC polytype stability and a low residual stress distribution in the intentionally n-type doped grown crystals.

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