China's artificial diamond production ranks first in the world, and there will be strong demand for diamonds in the future. China's leading CVD diamond manufacturers will welcome new opportunities for development.
Diamond is a special material that combines numerous excellent properties and is widely used in cutting tools, protective coatings, optical windows and acoustic sensors, semiconductors and electronic devices.
The reserves of natural diamonds are small and expensive. With the increase of diamond usage, how to improve the yield of high-quality diamond materials is an urgent problem to be solved. Chemical vapor deposition (CVD) is currently the main method for synthesizing large-sized single crystal diamonds.
Among numerous CVD methods, MPCVD (Microwave Plasma Chemical Vapor Deposition) is the most suitable method for the growth of single crystal diamonds. Existing technologies that use MPCVD to synthesize CVD single crystal diamonds often have problems such as uneven plasma distribution, uneven cooling of the water-cooled cooling base, and differences in contact between the crystal seeds and the sample stage, resulting in significant differences in the growth status of the crystal seeds, As a result, the quality of single crystal diamond grown in a single growth process varies.
To this end, Chinese diamond technologist SNZS applied for an invention patent on June 29, 2022 titled "A Single Crystal Diamond Manufacturing Method for Increasing the Growth Quantity of CVD Single Crystal Diamond" (application number: 202210747533.0).
The present patent proposes a single crystal diamond manufacturing method for increasing the growth quantity of CVD single crystal diamonds, which mainly includes seed screening, seed pre-treatment, and single crystal wafer growth.
The company has launched optical grade single crystal diamond, diamond single crystal wafers, diamond optical windows and other products based on the above patented technologies.