China thin film Manufacturers, Suppliers, Factory

The CVD process for SiC wafer epitaxy involves the deposition of SiC films onto a SiC substrate using a gas-phase reaction. The SiC precursor gases, typically methyltrichlorosilane (MTS) and ethylene (C2H4), are introduced into a reaction chamber where the SiC substrate is heated to a high temperature (usually between 1400 and 1600 degrees Celsius) under a controlled atmosphere of hydrogen (H2).

The history of silicon carbide (SiC) dates back to 1891, when Edward Goodrich Acheson accidentally discovered it while attempting to synthesize artificial diamonds. Acheson heated a mixture of clay (aluminosilicate) and powdered coke (carbon) in an electric furnace. Instead of the expected diamonds, he obtained a bright green crystal adhering to the carbon. This crystal had a hardness second only to diamond, and was thus named carborundum. In 1904, French-Jewish chemist Henri Moissan discovered rare natural silicon carbide minerals while studying meteorite samples from the Diablo Canyon in Arizona, USA. He named these minerals moissanite, and his discovery earned him the 1906 Nobel Prize in Chemistry.

Black alumina, thanks to its unique light-blocking property, durability, electrical insulation, low density, high air tightness and chemical stability, has become a key material in high-end fields such as semiconductors, optics and aerospace, especially irreplaceable in scenarios that are sensitive to light or have high reliability requirements.

Semiconductors are materials that guide electrical properties between conductors and insulators, with equal probability of loss and gain of electrons in the outermost layer of the atomic nucleus, and are easily made into PN junctions. Such as "silicon (Si)", "germanium (Ge)" and other materials.

The new energy vehicle industry is quickly advancing toward high-quality growth, becoming an eagerly awaited part of the global supply chain. The automotive power module acts as the "power center" of new energy vehicles, responsible for converting the battery's DC power into the AC needed to operate the motor. It also manages the motor's speed and torque, directly affecting the vehicle's performance and energy efficiency.

In semiconductor manufacturing, atomic-level flatness is usually used to describe the global flatness of the wafer, with the unit of nanometers (nm).