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According to a recent report by the Physicist Organization Network, researchers from the US-based Advanced Diamond Technology Corporation have developed an innovative technique that allows electronic devices to be coated with a thin layer of diamond at significantly lower temperatures. This breakthrough could enable more electronic components to benefit from the superior properties of diamond in the future. The findings were published in *Applied Physics Letters*, a prestigious journal by the American Institute of Physics (AIP).
Diamonds are highly valued for their exceptional characteristics, including extreme hardness, optical transparency, chemical resistance, and high thermal conductivity. These properties make them ideal for use in industrial and advanced technological applications. When integrated into electronic devices, diamonds are often doped with boron to enhance their electrical conductivity. However, traditional methods of producing boron-doped diamond coatings require extremely high temperatures—often exceeding 800°C—which can damage sensitive electronic components such as biosensors, semiconductors, and optical devices.
In their latest study, the team from Advanced Diamond Technology Corporation introduced a method that enables the creation of boron-doped diamond films at much lower temperatures, ranging between 460°C and 600°C. This development is significant because it opens up new possibilities for integrating diamond coatings into a wider range of electronic systems without risking damage due to heat.
Although the concept of growing boron-doped diamond films at lower temperatures has been explored before, previous attempts have not yielded commercially viable results. By adjusting the ratio of methane and hydrogen in the standard process and reducing the overall temperature, the research team was able to produce high-quality, thin diamond films. These films exhibit comparable performance in terms of conductivity and surface finish to those produced at higher temperatures.
The researchers believe that further studies are needed to fully understand the effects of low-temperature deposition on the material's properties. With continued optimization, they expect to achieve even lower growth temperatures—potentially below 400°C. According to Zeng Hongjun from Advanced Diamond Technology, "The lower the temperature, the more electronic devices can benefit from diamond coatings. This will also allow for greater flexibility in controlling the thickness, surface quality, and electrical properties of the films."
This advancement marks a major step forward in making diamond-based electronics more practical and widely applicable.