Very high tin doping of Ga0.47In0.53As by molecular beam epitaxy

Abstract
The incorporation of Sn into Ga0.47In0.53As grown at 450 °C by hydride source molecular beam epitaxy at concentrations ranging from about 3×1018 to 1×1021 Sn/cm3 has been investigated. Sn is a well behaved donor to about n=1020 cm3, although increasing compensation is noted with increasing doping. At total concentrations beyond about 1020 cm3 added Sn is not electrically active although the epitaxial quality remains high without noticeable morphology changes, defects, or precipitates, to at least 1021 Sn/cm3 .