2-16.Pits
Individual distinguishable surface anomalies, which appears as a depression in the wafer surface with a lengthto-width ratio less than 5 to 1, and visible under high intensity illumination.
2-16.Pits
Individual distinguishable surface anomalies, which appears as a depression in the wafer surface with a lengthto-width ratio less than 5 to 1, and visible under high intensity illumination.
Total Thickness Variation (TTV): The maximum variation in the wafer thickness. Total Thickness Variation is generally determined by measuring the wafer in 5 locations of a cross pattern (not too close to the wafer edge) and calculating the maximum measured difference in thickness. The [...]
5-4-2 Growth of 3C-SiC on Large-Area (Silicon) Substrates Despite the absence of SiC substrates, the potential benefits of SiC hostile-environment electronics nevertheless drove modest research efforts aimed at obtaining SiC in a manufacturable wafer form.Toward this end, the heteroepitaxial growth of single-crystal SiC layers on [...]
5-3-2 High-Power Device Operation The high breakdown field and high thermal conductivity of SiC coupled with high operational junction temperatures theoretically permit extremely high-power densities and efficiencies to be realized in SiC devices. The high breakdown field of SiC relative to silicon enables the blocking voltage region [...]
5-4-4-3 SiC Epilayer Doping In-situ doping during CVD epitaxial growth is primarily accomplished through the introduction of nitrogen (usually) for n-type and aluminum (usually trimethyl- or triethylaluminum) for p-type epilayers . Some alternative dopants such as phosphorus and boron have also been investigated for the [...]
2-2.Wafer Thickness, Center Point Thin (thickness depends on wafer diameter, but is typically less than 1mm),circular slice of single-crystal semiconductor material cut from the ingot of single crystal semiconductor; used in manufacturing of semiconductor devices and integrated circuits; wafer diameters may range from 5mm to [...]
2-8.Secondary Flat Orientation A at of shorter length than the primary orientation at,whose position with respect to the primary orientation at identies the face of the wafer.
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