Low-barrier Schottky detector using nanowire contacts for zero-biased THz applications

A Low-barrier Schottky detector (LBSD) for zero-biased Terahertz (THz) applications was developed using silver (Ag) metallic nanowires (NWs) with 120 nm diameter as bridge contacts on Indium Gallium Arsenide (InGaAs). A Schottky barrier height as low as 0.21 eV was obtained. This property leads to efficient zero-bias operation with a measured 3 dB roll-off frequency of about 1.2 THz and a noise equivalent power (NEP) of 7 pW/√Hz at 1 THz.