Solid solubility of selenium in GaAs as measured by secondary ion mass spectrometry

Abstract
Secondary ion mass spectrometry profiles of redistributed selenium ion‐implanted GaAs samples have been used to determine the solid solubility limit (Css) for this impurity. The data are well approximated by Css=9.5×1023 exp(−1.23±0.02eV/kT) cm−3. It is also shown that carrier concentrations equivalent to this limit can be obtained for annealing temperatures up to 900 °C.