THz Semiconductor Electronics

There is an urgent need to develop efficient frequency converters and signal sources that can operate up to frequencies close to 5THz without cryogenic cooling — beyond the limit of transistor technology. For this purpose, III-V-based semiconductor diodes, such as Schottky, heterostructure, and resonant tunnelling diodes, are used. In this presentation, I will discuss the current status, challenges and prospects for semiconductor electronics and circuits operating in the THz frequency range, including high-frequency characterisation techniques.