China Carbide Coated Epitaxial Growth Susceptor Manufacturers, Suppliers, Factory

SiC substrate can have microscopic defects, such as Threading Screw Dislocation (TSD), Threading Edge Dislocation (TED), Base Plane Dislocation (BPD), and others. These defects are caused by deviations in the arrangement of atoms at the atomic level. SiC crystals may also have macroscopic dislocations, like Si or C inclusions, micropipe, hexagonal voids, polymorphs, etc. These dislocations are typically large in size.

In the semiconductor industry, quartz is widely used, and high-purity quartz products are even more important consumables in wafer production. The production of silicon single crystal crucibles, crystal boats, diffusion furnace core tubes, and other quartz components must use high-purity quartz glass products.

Crystal growth is the core link in the production of Silicon Carbide substrates, and the core equipment is the crystal growth furnace. Similar to traditional crystalline silicon-grade crystal growth furnaces, the furnace structure is not very complex and mainly consists of a furnace body, a heating system, a coil transmission mechanism, a vacuum acquisition and measurement system, a gas path system, a cooling system, a control system, etc., among which Thermal field and process conditions determine the quality, size, conductive properties and other key indicators of Silicon Carbide crystals.

Currently, many semiconductor devices employ mesa device structures, which are predominantly created through two types of etching: wet etching and dry etching. While the simple and rapid wet etching plays a significant role in semiconductor device fabrication, it has inherent drawbacks such as isotropic etching and poor uniformity, which result in limited control when transferring small-sized patterns. Dry etching, however, with its high anisotropy, good uniformity, and repeatability, has become prominent in semiconductor device fabrication processes. The term “dry etching” broadly refers to any non-wet etching technology used for removing surface materials and transferring micro and nano patterns, including laser etching, plasma etching, and chemical vapor etching. The dry etching discussed in this text specifically pertains to the narrow application of processes using plasma discharge—either physical or chemical—to modify material surfaces.

When cleaning wafers, ultrasonic cleaning and megasonic cleaning are commonly used to remove particles from the wafer surface.

The semiconductor thin film deposition process is an essential component of modern microelectronics technology. It involves constructing complex integrated circuits by depositing one or more thin layers of material on a semiconductor substrate.