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Silicon Carbide (SiC) epitaxy is a key technology in the field of semiconductors, particularly for the development of high-power electronic devices. SiC is a compound semiconductor with a wide bandgap, which makes it ideal for applications that require a high-temperature and high-voltage operation.

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.

Chemical Vapor Deposition (CVD) refers to a process technology where multiple gaseous reactants at varied partial pressures undergo a chemical reaction under specific temperature and pressure conditions. The resulting solid substance deposits on the surface of the substrate material, thereby obtaining the desired thin film. In traditional integrated circuit manufacturing processes, the obtained thin film materials are generally compounds such as oxides, nitrides, carbides, or materials like polycrystalline silicon, amorphous silicon, etc.

Wide bandgap (WBG) semiconductors such as Silicon Carbide (SiC) and Gallium Nitride (GaN) are expected to play an increasingly important role in power electronic devices. They offer several advantages over traditional Silicon (Si) devices, including higher efficiency, power density, and switching frequency. Ion implantation is the primary method for achieving selective doping in Si devices. However, there are some challenges when applying it to wide bandgap devices. In this article, we will focus on some of these challenges and summarize their potential applications in GaN power devices.

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.

Plasma Enhanced Chemical Vapor Deposition (PECVD) is a widely used technology in chip manufacturing. It utilizes the kinetic energy of electrons within plasma to activate chemical reactions in the gas phase, thereby achieving thin-film deposition.