3.35 Inches! Crysdiam Homoepitaxial Single Crystal Diamond Once Again Breaks Through

Recently, CVD large single crystal diamonds were launched as scheduled in the diamond industrial park of Crysdiam. Among them, a single crystal diamond measuring 60mm x 60mm caught the eye.

Homoepitaxial Single Crystal Diamond Plates Produced by Crysdiam

Left: Product size 60mm x 60mm; Right: Long side dimension 72.29 mm

These diamond plates adopts homoepitaxial growth technology, which is not the first attempt of Crysdiam!

Based in Ningbo, China, Crysdiam has undergone more than 10 technological iterations since producing its first CVD single crystal diamond in 2014. By the end of 2023, 3-inch CVD single crystal diamond has been successfully mass-produced. Now the product has been upgraded again, with a size exceeding 3.35 inches, and Crysdiam is making a sprint towards the production of single crystal diamond with a size of 4 inches or more.

Crysdiam Product Development Timeline

Microwave Plasma Chemical Vapor Deposition (MPCVD) is widely recognized as the best method for producing large-size and high-quality single crystal diamonds in the industry. There are currently two main technological routes: homoepitaxy and heteroepitaxy. Compared to heteroepitaxial growth, the advantage of homoepitaxial technology lies in its high crystal quality, low internal stress and dislocation density, and the ability to grow larger diamond seed materials. Thereby it improves the efficiency of area increase. However, the technology is also highly challenging.

Crysdiam has always followed the path of homoepitaxial growth. The size of 60mm x 60mm, converted to commonly used units in the semiconductor industry wafer, is approximately 3.35 inches. This is also the first time that Crysdiam has reported to the public.

Accelerating the formation of new quality productive forces means accelerating the disruptive innovation from 0 to 1 and the stability improvement from 1 to 100. Chairman Jun'an Zhang said, "Currently, our production equipment has undergone multiple rounds of upgrades and iterations, expanded to 1500 reactors. This means that our annual manufacturing capacity of large-size, high-quality CVD single crystal diamond has reached 2 million carats, ranking among the top in the world.”

At present, Crysdiam has formed a completed industrial layout and standardized production capacity for diamond materials, related equipment and applications. The impurity content of CVD single crystal diamond produced by Crysdiam is less than 10 ppb, the surface roughness is less than 1 nm, and it can be controllably doped with nitrogen and boron elements, laying a more solid foundation for the functional application of diamond materials.

It is a long and difficult road from good technologies in the innovation chain to new applications in the industrial chain. The 'long material' is just the beginning.

The production capacity of Crysdiam has been achieved, and the next step is to accelerate innovation linkage with the upstream and downstream of the industrial chain.

Chairman Jun'an Zhang introduced, Crysdiam is stepping up to joint research and development with relevant enterprises and research institutes.

Crysidam Diamond Industrial Park and Various Equipment along the Industrial Line

What Crysdiam needs to do is to focus on industry demand, continuously innovate and iterate after completing independent innovation in diamond products, growth reactor, laser equipment, processing equipment, inspection and testing equipment. Ultimately, it will stand at the forefront of diamond industry development by extending downwards and expanding applications

At present, the high-level R&D center of Crysdiam has turned from a design blueprint into a reality. It covers an area of 82,000 square meters, with an initial investment of 1 billion yuan. A modern diamond industrial park with a construction area of over 80,000 square meters has been put into use. This has enhanced the confidence of Crysdiam to achieve the commercialization of scientific achievement.

“The first China enterprise specializing in the industrial production of CVD single crystal diamond”; “The first MPCVD single crystal diamond growth reactor with independent intellectual property rights”; “The first CVD large single crystal diamond industrial production line with independent intellectual property rights”... All these has become the first impression label of Crysdiam. In the future, this path of innovation will continue.