China has successfully developed 6-inch silicon carbide wafers with an annual production capacity of 70,000 pieces.

From 2 inches, 3 inches, 4 inches to the current 6 inches silicon carbide single crystal substrate, Chen Xiaolong's team spent over 10 years, taking the lead in China to achieve independent research and development and industrialization of silicon carbide single crystal substrates. According to a report by "China Science News" on the 12th, not long ago, the research group of Chen Xiaolong, a researcher at the Institute of Physics of the Chinese Academy of Sciences, collaborated with Beijing Tianke Hedai Blue Light Semiconductor Co., Ltd. (hereinafter referred to as Tianke Hedai) to solve the 6-inch widening technology and wafer processing technology, successfully developing 6-inch silicon carbide single crystal substrates. As of March 2014, Tianke Hedai had established a production line capable of manufacturing 70,000 silicon carbide wafers annually.

Silicon carbide, as a third-generation semiconductor material, can be used to manufacture new-generation high-efficiency and energy-saving power electronic devices and is widely applied in various fields of the national economy, such as air conditioners, photovoltaic power generation, wind power generation, high-efficiency motors, hybrid and pure electric vehicles, high-speed trains, smart grids, ultra-high voltage power transmission and transformation, etc. Compared with using traditional silicon devices, using silicon carbide semiconductor power electronic devices can significantly reduce energy losses in the power system, improve power usage efficiency, reduce the size of the power system, and at the same time improve system operation reliability and reduce the overall cost of the system. The popularization and application of efficient and energy-saving silicon carbide power electronic devices can provide technical support for industrial upgrading, energy conservation and emission reduction, and the construction of a low-carbon society.

   It is reported that the US F-22 fighter jets also extensively use silicon carbide semiconductor devices. China's silicon carbide technology was applied in the military sector earlier and is now gradually expanding into the civilian sector. Once it becomes widespread, it will bring about significant social benefits.