Deep-level admittance spectroscopy of D X centers in AlGaAs:Sn

Abstract
Deep‐level admittance spectroscopy (DLAS) of DX centers in AlxGa1−xAs:Sn (0.2<xDX center in AlxGa1−xAs:Sn with x>0.35 because of the strong freeze‐out of free carriers in these samples. Even in the case of low AlAs mole fraction samples (x<0.35), the DLTS technique fails to reveal all the levels observed by DLAS and provides information only on the SN3 level.