Formation of a new deep emission in Si+, S+, Se+, and Te+ ion-implanted GaAs

Abstract
Photoluminescence studies of Si+, S+, Se+, and Te+ ion‐implanted GaAs made by molecular beam epitaxy were carried out at 2 K. A new emission denoted by [D] was commonly obtained at 1.408 eV. It was also found that the controversial near band‐edge emissions, ‘g’ and [gg], which were originally produced by the ion implantation of acceptor impurities, were not formed by donor ion implantation.