[en] Studied are the spectrum composition of luminescence and electroreflection (ER) of cadmium selenide monocrystals undergoing various regimes of annealing and implanted with phosphorus ions with doses of 10¹⁴, 10¹⁵ and 10¹⁶ at.cm^-2. It is shown that spectrum composition of luminescence of monocrystal regions alloyed with phosphorus ions is determined by two momenta: implantation effects and the change of the material stoichiometry. Changes in ER spectra are related to the change of the ordering degree of irradiated crystal region