China quartz tube furnace Manufacturers, Suppliers, Factory

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.

To meet the demands for high performance and low power consumption in the realm of modern semiconductor technology, SiGe (Silicon Germanium) has emerged as a composite material of choice in semiconductor chip manufacturing due to its unique physical and electrical properties.

In semiconductor manufacturing, the precision and stability of the etching process are paramount. One critical factor in achieving high-quality etching is ensuring that wafers are perfectly flat on the tray during the process. Any deviation can lead to uneven ion bombardment, causing undesirable angles and variations in etching rates. To address these challenges, engineers have developed Electrostatic Chucks (ESCs), which have significantly improved etching quality and stability. This article delves into the design and functionality of ESCs, focusing on one key aspect: the electrostatic principles behind wafer adhesion.

​As the world searches for new opportunities in the semiconductor field, Gallium Nitride (GaN) continues to stand out as a potential candidate for future power and RF applications. However, despite its numerous benefits, GaN faces a significant challenge: the absence of P-type products. Why is GaN hailed as the next major semiconductor material, why is the lack of P-type GaN devices a critical drawback, and what does this mean for future designs?

The four main molding methods for graphite molding are: extrusion molding, molding, vibratory molding and isostatic molding. Most of the common carbon/graphite materials on the market are molded by hot extrusion and molding (cold or hot), and isostatic molding is a method with leading molding performance. Vibration molding is generally used to manufacture medium and coarse structural graphite, particle size between 0.5-2mm particle size, generally dominated by di-roasted graphitized products, density between 1.55-1.75kg/m³, coarser particles, rougher surface, can not be used for precision machining. It is mainly used in chemical industry and metal smelting.

Silicon carbide (SiC), as a wide bandgap semiconductor material, offers unparalleled advantages in high-power, high-temperature, and high-frequency applications.