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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...
Long and short buried-channel In0.7Ga0.3As MOSFETs with and without alpha-Si passivation are demonstrated. Devices with alpha-Si passivation show much higher transconductance and an effective peak mobility of 3810 cm2/ V middots. Short-channel MOSFETs with a gate length of 160 nm display a current of 825 muA/mum at Vg - Vt = 1.6 V and peak transconductance of 715 muS/mum. In addition, the virtual...
We report a CMOS-compatible vertical MOSFET, which incorporates a frame gate architecture suitable for application in RF circuits. Fabricated surround gate vertical MOSFETs with the frame gate architecture show no degradation of short channel effects when the channel length is scaled, while control devices show significantly degraded sub-threshold slope and DIBL. The frame gate vertical MOSFETs show...
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