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- W4384819755 abstract "A new type of vertical sandwich gate-all around tunneling field-effect-transistors (TFETs), called VSATFETs, was demonstrated firstly with a CMOS-compatible process. The VSATFETs with self-aligned high-κ metal gates (HKMG) and abrupt doping tunneling junctions were fabricated with the epitaxial of p+−Si/i-SiGe/n+−Si sandwich structure and an isotropic quasi-atomic layer-etch (qALE) process. VSATFETs have the advantage of excellent control of channel size, because its gate-length is mainly determined by the thickness of SiGe film grown by epitaxy, and the diameter of the nanowires (NWs)/thickness of nanosheets (NSs) is determined by the qALE etching of SiGe selective to Si. A NW VSATFET with a diameter of 18 nm was fabricated and exhibits excellent characteristics: SS min = 61.64 mV dec −1 , I on = 2.25 × 10 −7 A u −1 m −1 (@V gs −V t = 0.45 V, V d = 0.65 V), I on /I off = 1.81 × 10 6 , DIBL = 7.58 mV. The effect of interface traps on the device performance was analyzed by the calibrated model. It is found that the device performance can be improved by decreasing the thickness/diameter of NS/NW TFET." @default.
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- W4384819755 date "2023-07-01" @default.
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- W4384819755 title "First Demonstration of Vertical Sandwich GAA TFETs with Self-Aligned High-k Metal Gates and Abrupt Doping Tunneling Junctions" @default.
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- W4384819755 doi "https://doi.org/10.1149/2162-8777/ace8bb" @default.
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