Projected performance of experimental InAs/GaAsSb/GaSb TFET as millimeter-wave detector

Abstract

Based on measurements of a vertical nanowire InAs/GaAsSb/GaSb tunneling field-effect transistor (TFET) that exhibited minimum subthreshold swing of 48 mV/dec and a record high I60 of 0.31 μA/μm, a SPICE model has been generated to allow an experimentally-based prediction of the nanowire TFET technology. At 30 GHz the detector has been simulated to reveal a sensitivity of 4.8 kV/W biased near zero volts (VGS = −0.06 V, VDS = 0.1 V). A maximum sensitivity of over 4000 kV/W has been obtained under biased conditions. These results exceed prior measurements of an In0.53Ga0.47As/ GaAs0.5Sb0.5 heterojunction TFET by over an order of magnitude.