We report the results for the electronic energy structure of Y-doped GaAs (Ga1-xYxAs).Its electronic energy spectrum is calculated within the framework of density functional theory.The concentration dependences of the main energy, optical, and structural properties are obtained for a number of yttrium concentrations in the region x = 00.25.The energy band dispersion and the density of states of these materials are analyzed.Based on the electronic energy spectrum, the real and imaginary components of the dielectric function are calculated.Using the Kramers-Kronig relations, we also derive such fundamental optical functions of Ga1-xYxAs as the refractive index n, the extinction coefficient k, and the absorption coefficient .
Ilchuk et al. (Thu,) studied this question.