Zhengzhou University Synthesized High Quality Diamonds by Using New Method

Recently, Shan Chongxin, Lu Yingjie and their team from Zhengzhou University synthesized high quality SI1 diamond more than 1.2 carats.

It is learned that natural diamonds on the earth are formed by carbon under the special conditions of high temperature and high pressure in the deep earth (100-300 - km below the surface, 5-7 million atmospheric pressure and 1200-1800 degrees Celsius) and a certain content and ratio of iron group metals and graphite after one hundred million years, and in case of volcanic eruptions or other geological movements, they are brought to the surface.

At present, it has proved diamond reserves about 2.5 billion carats on earth, but the search for diamond deposit is often costly. Natural diamond mining will not only cost a lot of resources, but also cause the irreparable damage for ecological environment on earth.

Synthetic diamond can be done in the laboratory, which does not destroy the ecology, and the consumed energy is also limited, so it is a green industry. As a result, some people predict that synthetic diamond will gradually become the mainstream in the jewelry market.

It is reported that in recent years, people have found the diamonds have not only the highest hardness of natural material, but also large forbidden band width, the highest known natural material thermal conductivity, high breakdown electric field, the larger carrier saturation mobility and other significant characteristics. Therefore, it is expected to become the next generation excellent candidate materials of power electronic devices. If you are interested in high quality synthetic diamond, welcome to Henan Yuxing Sino Crystal Micron Diamond Co., Ltd. to learn more product details.

Shan Chongxin said that the current main diamond synthesis technology is high temperature and high pressure method, but it may cause more impurities because of nitrogen or catalyst into diamonds  in the process of synthesis, and have some obstacles in the applications of power electronic devices, etc.

Therefore, Lu Yingjie and others developed synthetic diamond single crystal and carat diamond process by using chemical vapor deposition through hard exploration. In the process, the synthesis temperature does not exceed 1000 degrees, less than a atmospheric pressure, without the use of catalyst at the same time in the process of synthesis, so as to ensure the purity of synthetic diamond and diamond color and clarity. It is expected to be used in jewelry, microwave and terahertz window, high-energy particle detection, power electronic devices, etc.