Diamond wafers lead a new revolution in power devices

It is estimated that 50% of the world's electricity is currently controlled by power devices, and it is expected that this number will increase to 80% in less than a decade. At the same time, electricity demand will increase by 50%. In order to achieve the goal of world carbon neutrality by 2050, fundamental changes must occur in electronic materials, and diamond wafers are the best choice.

Diamond is an ultra wideband semiconductor with the highest thermal conductivity. Compared with traditional semiconductor materials such as silicon, diamond semiconductor devices can operate at higher voltages and currents (using fewer materials) and still dissipate heat without causing a decrease in electrical performance.

Diamond is an emerging high-power electronic semiconductor with large bandgap, large critical electric field, high carrier mobility, and high thermal conductivity.American researchers have developed a semiconductor device made of diamond, which has the highest breakdown voltage and lowest leakage current compared to previously reported diamond devices.

Research has shown that their diamond device can withstand a high voltage of approximately 5kV. In theory, the device can withstand a voltage of up to 9kV, which is the highest voltage reported by the diamond device. In addition to the highest breakdown voltage, the device also exhibits the lowest leakage current， leakage current affects the overall efficiency and reliability of the device.

CSMH focuses on the research and production of diamond materials, with over 10 years of technological accumulation. It has mastered the most comprehensive core processes such as equipment development, material growth, grinding and polishing. Its core products include diamond heat sinks, diamond wafers, diamond gallium nitride, diamond aluminum nitride, etc. Among them, diamond wafer growth surface roughness Ra< 1nm, and the thermal conductivity of diamond heat sinks reaches 1000-2200W/(m · K). Currently, it has been widely used in 5G communication New energy vehicles, medical devices, aerospace, new energy and many other fields.