Is CVD Diamond Ready to be (Eventually) an Electronic Material?

With the recent downturn in the gem business, can we consider that we have reached an inflection point where CVD diamond may soon benefit from the plethora of systems and highly skilled process engineers currently available on the planet, to explore its potential of electronic and quantum device applications? How can we facilitate progress in this area and contribute to diamond substrates and wafers to become more easily available?<br/>Since the early 90s, CVD Diamond was expected to become an essential material for electronics and sensing applications. More recently, quantum applications have made CVD diamond one of the top materials for quantum computing. However, the lack of available large area high-quality materials on a large-scale commercial basis continues to hinder progress in diamond research. Is this due to issues with substrates, production yields, equipment, or simply marketing opportunities? It is evident that all diamond breakthroughs have been affected in recent years by the potential impacts they could represent in the perspective of the flourishing business of lab-grown diamonds. For example, innovative approaches have demonstrated the feasibility of large heteroepitaxial substrates, but they have not yet become available to the community. The same goes for materials with low impurity levels and/or minimal crystalline defects.<br/>Drawing from typical examples of diamond-based devices used for specific applications, a few examples will be used to illustrate a discussion on diamond material opportunities and challenges to address in the short term.