SiC Substrate For SiC Epitaxial Wafers

For SiC Wafer Manufacturers, the substrates we produce as the foundation for subsequent processes. HMT produce excellent 4H-N 4inch 6inch and 8inch SiC Substrate for SiC Epitaxial Wafers growing. SiC epitaxy refers to the process of growing single-crystal thin layer on a SiC Substrate. This process typically takes place under high temperature and high-pressure atmospheres, where a SiC layer with a lattice structure matching that of the substrate is formed on the substrate surface through vapor deposition techniques. The primary goal of epitaxial technology is to prepare high-quality semiconductor devices on the original substrate.

Based on application requirements, epitaxial layers can be classified into:

homoepitaxy (growing SiC epitaxial layers on conductive SiC substrates) and heteroepitaxy (growing GaN epitaxial layers on semi-insulating SiC substrates). The size of the epitaxial layer is typically consistent with the substrate, with common specifications including 4 inches (100 mm), 6 inches (150 mm), and 8 inches (200 mm). SiC epitaxial technology is widely used in power semiconductor devices, high-speed integrated circuits, and optoelectronic devices, leveraging the superior characteristics of SiC materials such as high breakdown electric field, high saturated electron velocity, and high thermal conductivity.

SiC on SiC Epi Wafer GaN on SiC Epi Wafer

SiC Epitaxy Wafer Main Applications

(1) Power Devices:

Used in the manufacturing of power MOSFETs, IGBTs, and other devices, significantly improving their voltage resistance, switching speed, and efficiency while reducing energy consumption. Widely applied in electric vehicles, photovoltaic power generation, smart grids, and other fields.

(2) Radio Frequency (RF) Devices:

In areas such as 5G communication and satellite communication,SiC epi layers can be used to fabricate high-performance RF power amplifiers, switches, and other devices. These devices support high-frequency, high-power operation, enhancing the performance and reliability of communication systems.

(3) Optoelectronic Devices: Such as light-emitting diodes (LEDs) and laser diodes.

Leveraging the unique optical and electrical properties of SiC epitaxial layers, high-brightness, high-efficiency light emission and laser output can be achieved. These are applied in lighting, displays, optical communication, and other fields.