Fabrication of H-FET
True or false: Do H-FETs with germanium quantum wells require ion implantation for making ohmic contacts?
False.
While ion implantation can be used for ohmic contacts in germanium quantum wells, it is not required. Metallic germanosilicides, for example formed by the solid-state reaction between platinum and SiGe, are commonly used to achieve ohmic contacts to two-dimensional hole gases in germanium.