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One of the biggest challenges for the VLSI circuits with 20-nm-technology nodes and beyond is to overcome the issue of a catastrophic increase in power dissipation of the circuit due to short channel effects (SCEs). Fortunately, double-gate FinFETs have a promising potential to overcome this issue due to their superior SCE immunity even with an undoped channel thanks to the 3D structure. This paper...
PVD-TiN gate FinFET SRAM half-cells with different β-ratios and fin-height controlled transistors have successfully been fabricated using orientation-dependent wet etching and selective recess RIE. It was found that read static noise margin (SNM) increases significantly by controlling β from 1 to 2. With further increasing β, read SNM increases slightly. On the other hand, write margin shows weak...
The Vt variability in scaled FinFETs with gate length (Lg) down to 25 nm was systematically investigated, for the first time. By investigating the gate oxide thickness (Tox) dependence of Vt variation (VTV), the gate-stack origin, i.e., work-function variation (WFV) and gate oxide charge (Qox) variation (OCV) origin VTV were successfully separated. It was found that the atomically flat Si-fin sidewall...
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