Concentration ratio dependence of selective optical compensation effect in dually Zn+ and Se+ ion-implanted GaAs

Abstract
The selective optical compensation effect in which exclusively acceptor‐associated emissions g and [gg] are selectively quenched by the simultaneous presence of acceptor and donor atoms, was investigated in dually Zn+ (acceptor)‐implanted and Se+(donor)‐implanted GaAs as a function of Se to Zn concentration ratio, [Se]/[Zn], at a fixed Zn concentration of 1×1017 cm3. It was revealed for the first time that Se atoms with one‐tenth of the concentration of Zn have the ability to significantly suppress the [gg] emission. However, the g emission is not significantly suppressed by the presence of even an equal concentration of Se atoms.