3-11. Particles
Particles have the appearance of eyes and if present are usually concentrated at the wafer edges and not within the speci ed area. If present, count once per occurrence.Two particles within 200 microns count as one.
3-11. Particles
Particles have the appearance of eyes and if present are usually concentrated at the wafer edges and not within the speci ed area. If present, count once per occurrence.Two particles within 200 microns count as one.
2-1.Wafer Diameter The linear distance across the surface of a circular slice which contains the slice center and excludes any flats or other peripheral fiduciary areas. Standard silicon wafer diameters are: 25.4mm (1″), 50.4mm (2″), 76.2mm (3″), 100mm (4″), 125mm(5″), 150mm (6″), 200mm (8″), and [...]
5-2-2-2 SiC Semiconductor Electrical Properties Owing to the differing arrangement of Si and C atoms within the SiC crystal lattice, each SiC polytype exhibits unique fundamental electrical and optical properties. Some of the more important semiconductor electrical properties of the 3C, 4H, and 6H SiC polytypes are [...]
5-4 SiC Semiconductor Crystal Growth As of this writing, much of the outstanding theoretical promise of SiC electronics highlighted in the previous section has largely gone unrealized. A brief historical examination quickly shows that serious shortcomings in SiC semiconductor material manufacturability and quality have greatly hindered the development [...]
2-6.Wafer Primary Flat The flat of longest length on the wafer, oriented such that the chord is parallel with a specified low index crystal plane; major flat. The primary at is the {10-10} plane with the at face parallel to the <11-20> direction.
5-4-4-1 SiC Epitaxial Growth Processes An interesting variety of SiC epitaxial growth methodologies, ranging from liquid-phase epitaxy, molecular beam epitaxy, and chemical vapor deposition(CVD) have been investigated . The CVD growth technique is generally accepted as the most promising method for attaining epilayer reproducibility, quality, [...]
5-4-5 SiC Crystal Dislocation Defects Table 5.2 summarizes the major known dislocation defects found in present-day commercial 4H- and 6H-SiC wafers and epilayers . Since the active regions of devices reside in epilayers, the epilayer defect content is clearly of primary importance to SiC device [...]
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