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A diamond wafer is a thin, flat piece of diamond material that is used in various high-tech applications, especially in the semiconductor industry. Diamonds are known for their exceptional hardness, thermal conductivity, and optical properties, making them valuable substrates for a range of electronic and optical devices.
In the field of high-power electronics, diamond wafers are employed as substrates for high-frequency, high-power semiconductor devices, such as gallium nitride (GaN) transistors. These devices are used in applications like radar systems, communication infrastructure, and military electronics.
Diamond wafers serve as an ideal substrate for these devices because of their excellent thermal conductivity. They can efficiently dissipate the heat generated during device operation, allowing for increased power handling capabilities and improved device performance.
The plan is to develop and construct diodes, transistors, capacitors, quantum sensors, and high-energy detectors using a combination of in-house expertise and a wider partner ecosystem in order to produce a scalable model.
They have met their objectives, which included having a breakdown electric field more than 7.7MV/cm and a high current density of over 1000A/cm2. They are already better than what can be provided for power electronics by current materials like SiC and are crucial factors for the performances of future devices.
Diamond has been shown to be the best material for semiconductors due to its inherent qualities, significantly outperforming silicon, which has been the industry standard for more than 60 years. Semiconductor fabricators traditionally rely on 300MM silicon wafers despite the fact that silicon has reached its physical limits in order to create the most cutting-edge technologies in the world.
The capacity to fabricate 300MM diamond wafers is essential for semiconductor manufacturers, particularly in high-tech sectors including aerospace, telecommunications, military and defence, and consumer electronics.
Group4 s wafers are made of CVD diamond, which has a thermal conductivity that is 3 to 30 times better than that of ordinary semiconductors. Manufacturers of power amplifiers for cellular base stations, microwave and millimetre-wave circuits, ultraviolet laser diodes, and ultra-blue, green, and white LEDs may now achieve power densities never previously attained.
A Japanese company with a jewellery industry heritage has developed a brand-new method for manufacturing 2-inch diamond wafers in large quantities.
Instead of employing diamond microneedle seeding, step flow growth is used to produce diamonds on a sapphire substrate coated in an iridium layer.
The novel technique’s substrates and stepped structure enable the formation of the diamond under extreme heat and pressure without any stress cracks after cooling.
The new wafers are suitable for applications involving quantum storage because of their size and low nitrogen content. When used for electronics, diamonds have certain very desirable properties. The usage of diamonds by Japanese researchers to make transistors with considerable appeal for low-loss power conversion and high-speed communication components was covered.
By growing the crystals on a substrate material, often a flat surface, diamond wafers are created. Nitrogen impurities with a concentration of several ppm are mixed with the diamond crystal during the process of growing diamond crystals, which prevents them from being employed in quantum computers.
The ultra-high purity of the diamond, known as Kenzan Diamond, enables it to store a staggering 25 exabytes of data the equivalent of one billion Blu-Ray discs making it a potential candidate for quantum memory.
The smallest workable diamond crystals up until this point were only four millimetre squares. Future quantum computers are anticipated to be realised thanks to this breakthrough technology.
The diamond may break under the pressure, lowering the diamond’s quality, which is the biggest issue with this approach. By using a substrate surface that is formed like steps in the novel technique, the team is able to spread the strain horizontally and avoid breaking. They can now produce larger, higher-purity diamond wafers thanks to this newly utilised surface.
The Global Diamond wafer Market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
