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ZnSe nanocrystals have been obtained in the pores of SiO2 matrices by two different methods – chemical vapour deposition (CVD) method and method of impregnation of SiO2 matrices with ZnCl2 solution and subsequent annealing in H2Se atmosphere. Luminescence spectra of ZnSe nanocrystals are characterized by wide green band which intensity remains equally high as at 77K, so at 300K contrary to ZnSe bulk...