Experimental demonstration of improved analog device performance in GAA-NW-TFETs

Abstract

We present experimental data on analog device performance of p-type planar and gate all around (GAA) nanowire (NW) Tunnel-FETs (TFETs). 10 nm diameter GAA-NW-TFETs reach a maximum transconductance efficiency of 12.7V-1 which is close to values obtained from simulations. A significant improvement of the analog performance by enhancing the electrostatics from planar TFETs to GAA-NW-TFETs with diameter of 20 nm and 10 nm is demonstrated. A maximum transconductance of 122 μS/μm and on-current up to 23 μ A/μm at a gate overdrive of Vgt = Vd = -1 V were achieved for the GAA-NW-TFETs. Furthermore a good output current-saturation is observed leading to high intrinsic gain up to 217 which is even higher than in 20 nm FinFETs.