PROJECT TITLE :
Comprehensive Analysis of Gate-Induced Drain Leakage in Vertically Stacked Nanowire FETs: Inversion-Mode Versus Junctionless Mode
A comprehensive analysis of the gate-induced drain leakage (GIDL) current of vertically stacked nanowire (VS-NW) FETs was administered. In explicit, two different operational modes of the VS-NW, an inversion mode (IM) and a junctionless mode (JM), were compared. The GIDL current of the JM-FET was significantly smaller than that of the IM-FET, and the explanation for the difference was consequently determined by numerical simulations. It was found that the source of the distinction between the IM-FET and JM-FET was the distinction in supply/drain (S/D) doping concentration, where the depletion width becomes the tunneling width, considering a long extension length at the S/D regions. The experimental results showed that the GIDL current of the NW FET was considerably controlled by longitudinal band-to-band tunneling (BTBT), rather than the transverse BTBT, as had been reported in the previous literature.
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