Revolutionizing Semiconductors: The Promise of Diamond Chips with Adam Khan
We recently interviewed Adam Khan, founder and CEO of Diamond Quanta. The company aims to replace silicon chips with diamond ones. We discussed the reasons for this idea, the challenges, and its implications.
Silicon chips have driven the growth of electronics and computers for 50 years. As per Moore’s Law, the number of transistors on a chip doubled every two years. This increased computer power while lowering costs. However, silicon is reaching its limits due to physical constraints. As chip components shrink, quantum effects arise, leading to diminishing returns.
Diamond Quanta seeks to overcome these limitations by using diamond. This may seem extravagant, but it promises more advanced and efficient computers that can operate in high temperatures.
Adam Khan has over 15 years of experience with lab-grown diamond technology. His previous company, Akhan Semiconductor, focused on thin-film nanocrystalline diamond. Adam holds degrees in physics and electrical engineering and has developed numerous patents in diamond technology.
A diamond semiconductor represents a new generation of technology. The first was germanium, followed by silicon. Diamond’s structure allows for outstanding heat dissipation and fast electron movement. Lab-grown diamond from methane provides a promising alternative to silicon.
Diamond’s thermal conductivity is remarkable. Its strong covalent bonds allow efficient heat transfer, making it ideal for high-heat applications. Diamond’s thermal conductivity is about 20 times better than silicon.
Lab-grown diamonds have existed since shortly after World War II, with innovations in growing diamond using chemical vapor deposition (CVD) techniques. This progress led to larger diamond wafers, similar in size to silicon wafers. However, diamond’s insulating properties have made it challenging to use in semiconductors. The key issue is enabling charge transport without degrading the diamond.
Improving charge transport is crucial for diamond semiconductors to compete with silicon and other materials. Diamond’s unmatched thermal management, along with high power conductance and fast switching speeds, make it an excellent candidate.
Diamond can outperform traditional semiconductors in multiple areas, including handling high frequencies. Currently, Diamond Quanta is focusing on power devices for high-temperature applications, like electric vehicles.
In the future, diamond-based chips could be used in high-performance GPUs and logic applications. The aim is to first mature technology in power semiconductors, allowing for lighter electric vehicles and increased efficiency.
Diamond has a significant role in quantum computing, particularly due to nitrogen vacancy (NV) centers. These centers can create qubits with long coherence times, ideal for quantum states. About 40% of current quantum systems use diamond. Diamond’s unique properties support faster charge propagation and enhance qubit performance.
The cost of lab-grown diamonds has decreased significantly, making them competitive with silicon carbide and gallium nitride. Industrial-grade diamonds used in technology are now much more affordable than mined diamonds.
In ten years, Diamond Quanta predicts that diamond technology will be as widespread as silicon is today. It will first be used in high-performance sectors before expanding into consumer electronics. Diamond’s superior attributes indicate it will lead the next wave of semiconductor technology.