Recently, progress has been made in the development of semiconductors for power control using diamonds, which are called "ultimate power semiconductors". Professor Kazuki, a professor at Saga University in Japan, and Japan Orbray, a precision parts manufacturer, have developed a power semiconductor made of diamond, which operates at 875 megawatts per square centimeter.
Among diamond semiconductors, the output power value is the highest in the world, and it is second only to gallium nitride products at about 2090 megawatts among all semiconductors. Compared with silicon carbide (SiC) products and gallium nitride (GaN) products, which are next-generation power semiconductors, diamond semiconductors have excellent performance such as high voltage resistance, and power loss is considered to be reduced to 1/50,000 of silicon products. Diamond power semiconductors are also highly resistant to heat and radiation, and are expected to become necessary components for artificial satellites by around 2050.
Semiconductor materials are electronic materials for making semiconductor devices and integrated circuits. High voltage resistance, high radio frequency, low cost, high temperature resistance, and multiple characteristics help diamond become the next generation of semiconductor materials. The bandgap width of diamond is 5.5eV, which exceeds the existing gallium nitride, silicon carbide, etc., and the carrier mobility is also three times that of silicon materials. At the same time, diamond has an extremely low intrinsic carrier concentration at room temperature, and has excellent durability high temperature properties.
Wang Huajun of Zheshang Securities pointed out that with the full development of the 5G communication era, the application of diamond single crystal materials in semiconductors and high-frequency power devices has become increasingly prominent. At present, countries around the world are stepping up the research and development of diamond in the field of semiconductors. Ultra-high purity 2-inch diamond wafer mass production method, its storage capacity is equivalent to 1 billion Blu-ray discs.
