Diamond-based plasmonic terahertz devices

p-diamond is a strong contender for sub-THz and THz applications specifically due to its large hole effective mass, high optical phonon energy, and, therefore, high momentum relaxation time, and high mobility. It has the potential for efficient operation in the 300 GHz band targeted for future 6G communications. We review some of the recent works on p-diamond TeraFETs demonstrating their potential to detect and transmit sub-THz and THz radiation. We also report on the potential of n-diamond TeraFETs or emerging terahertz applications. One of the main factors in our research that account for the plasma wave dampness of the electron stream is the viscosity of the charge carrier medium in the channel.