Luminescent properties of nanocomposite - Bi₁₂SiO₂₀, filled with C₆H₉EuO₆ × H₂O

The work presents the results of the study of the photoluminescence spectra of the (111) growth surface of an opal - Bi₁₂SiO₂₀ matrix nanocomposite filled with europium (III) acetate hydrate (C₆H₉EuO₆ × H₂O). An increase in the integral luminescence intensity of the matrix composite opal - Bi₁₂SiO₂₀: Eu³⁺ compared to composite opal: Eu³⁺ was found. The measured photoluminescence spectra of the Bi³⁺ ions in the opal pores indicate its participation in optical processes as a co-activator of luminescence. A change in the character of the splitting of the main luminescence bands of Eu³⁺ ions in the region of 575–635 nm and the integral luminescence intensity after dehydration of the crystalline hydrate in opal pores has been established. (paper)