China MEMS Manufacturers, Suppliers, Factory

By 2027, solar photovoltaic (PV) will overtake coal as the world's largest installed capacity. The cumulative installed capacity of solar PV nearly triples in our forecast, growing by nearly 1,500 gigawatts over this period, and will surpass natural gas by 2026 and coal by 2027.

The processing of 4H-SiC substrate mainly includes the following steps:

The most basic stage of all processes is the oxidation process. The oxidation process is to place the silicon wafer in an atmosphere of oxidants such as oxygen or water vapor for high-temperature heat treatment (800~1200℃), and a chemical reaction occurs on the surface of the silicon wafer to form an oxide film (SiO2 film).

Within the silicon carbide (SiC) industry chain, substrate suppliers hold significant leverage, primarily due to value distribution. SiC substrates account for 47% of the total value, followed by epitaxial layers at 23%, while device design and manufacturing constitute the remaining 30%. This inverted value chain stems from the high technological barriers inherent to substrate and epitaxial layer production. Three major challenges plague SiC substrate growth: stringent growth conditions, slow growth rates, and demanding crystallographic requirements. These complexities contribute to increased processing difficulty, ultimately resulting in low product yields and high costs. Furthermore, the epitaxial layer’s thickness and doping concentration are critical parameters directly impacting the final device performance.

Silicon material is a solid material with certain semiconductor electrical properties and physical stability, and provides substrate support for the subsequent integrated circuit manufacturing process. It is a key material for silicon-based integrated circuits. More than 95% of semiconductor devices and more than 90% of integrated circuits in the world are made on silicon wafers.

Silicon carbide (SiC), a prominent structural ceramic, is renowned for its exceptional properties, including high-temperature strength, hardness, elastic modulus, wear resistance, thermal conductivity, and corrosion resistance. These attributes make it suitable for a wide range of applications, from traditional industrial uses in high-temperature kiln furniture, burner nozzles, heat exchangers, sealing rings, and sliding bearings, to advanced applications like ballistic armor, space mirrors, semiconductor wafer chucks, and nuclear fuel cladding.