PROJECT TITLE :
Comparison of Gate-Metal Work Function Variability Between Ge and Si p-Channel FinFETs
During this paper, for the first time, the performance of a Ge p-channel FinFET in the presence of random grain-orientation-induced gate-metal work perform variability (WFV) is reported. The statistical fluctuation in threshold voltage ( ) and subthreshold swing (SS) are estimated for a Ge p-FinFET of varying channel length, fin width, equivalent oxide thickness of the gate dielectric, and provide voltage using a 3-D numerical device simulator, and compared with that for a equally sized Si p-FinFET. The results indicate that the Ge FinFET shows better immunity to WFV-induced fluctuations, whereas a higher variation in SS is observed for such devices as compared with its Si counterpart.
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