Transistor operations in 30-nm-gate-length EJ-MOSFETs

Discusses fabrication of electrically variable shallow junction MOSFETs (EJ-MOSFETs) to investigate transistor characteristics in ultra-fine gate MOSFETs. By using electron beam (EB) lithography and an ultra-high resolution resist (Calixarene), we could achieve a gate length of 30 nm for the first time. Since the short-channel effects are effectively suppressed by electrically induced ultra-shallow source/drain regions in the structure, the fabricated device exhibited normal transistor characteristics in the 30-nm-gate-length regime at 300 K.