2-18.Grain boundaries
They are interfaces where crystals of different orientations meet. A grain boundary is a single-phase interface, with crystals on each side of the boundary being identical except in orientation. The term “crystallite boundary” is sometimes, though rarely, used. Grain boundary areas contain those atoms that have been perturbed from their original lattice sites, dislocations, and impurities that have migrated to the lower energy grain boundary.
2-27.BOW Bow is the deviation of the center point of the median surface of a free, un-clamped wafer from the median surface to the reference plane. Where the reference plane is defined by three corners of equilateral triangle. This definition is based on now obsolete [...]
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.
5-5-6 SiC Device Packaging and System Considerations Hostile-environment SiC semiconductor devices and ICs are of little advantage if they cannot be reliably packaged and connected to form a complete system capable of hostile-environment operation. With proper material selection, modifications of existing IC packaging technologies appear [...]
5-6-4-1-1 SiC Schottky Power Rectifiers. 4H-SiC power Schottky diodes (with rated blocking voltages up to 1200 V and rated on-state currents up to 20 A as of this writing) are now commercially available . The basic structure of these unipolar diodes is a patterned metal [...]
2-4.Wafer Surface Orientation Denotes the orientation of the surface of a wafer with respect to a crystallographic plane within the lattice structure. In wafers cut intentionally “off orientation”, the direction of cut is parallel to the primary at, away from the secondary at. Measured with [...]
In optics the refractive index (or index of refraction) n of a substance (optical medium) is a number that describes how light, or any other radiation, propagates through that medium. Refractive index is the basic property of optical crystals, and it is an important parameter [...]
