Features of radiative recombination of iron-doped gallium antimonide

Abstract

We report on the results of the studies of the features of radiative recombination of iron-doped gallium antimonide at T = 2 K, in the absence of an external magnetic field. Specimens were prepared by a modified method of zone melting. The concentration of iron incorporated in the melt varied in the range of 0.001–3 (atomic percent). The studied specimens exhibited p-type conductivity. It was demonstrated that in gallium antimonide iron created a shallow acceptor level with the ionization energy of (22 ± 0.2) meV. In addition, the structure of the radiative recombination spectra was determined and the concentration of radiative centers was found out.