Future of CMOS technology

Previously, CMOS downsizing has been accelerated very aggressively in both production and research level, and even transistor operation of a 5 nm gate length p-channel MOSFET was reported in a conference. However, many serious problems are expected for implementing small-geometry MOSFETs into large scale integrated circuits even for 45 nm technology node, and it is questionable whether we can successfully introduce sub-10 nm CMOS LSIs into market or not. In This work, limitation and its possible causes for the downscaling of CMOS are discussed from many aspects.