ZnSe:Fe single crystals obtained by diffusion doping were studied. The spectra of optical density in the range of energies of 0.4–3eV were studied. The iron concentration in the studied crystals was determined using the magnitude of the shift of the absorption edge. The nature of the optical transitions determining the optical properties of ZnSe:Fe single crystals in the visible and IR regions of the spectrum was identified. The diffusion profile of Fe impurity was determined by measuring the relative optical density of crystals in the visible spectral region. The diffusivities of Fe in the ZnSe crystals were calculated for temperatures of 1120–1320K. At 1270K, the diffusivity of Fe was 3 × 10−10cm2/s.

Optical Absorption and Diffusion of Iron in ZnSe Single Crystals. Y.F.Vaksman, Y.A.Nitsuk, V.V.Yatsun, A.S.Nasibov, P.V.Shapkin: Semiconductors, 2010, 44[4], 444-7