The specific features of the crystal structure of crystal phosphors Y3Al5O12: Ce3+/Lu2O3 (Lu2O3: Ce) synthesized by the colloidal chemical method have been investigated by neutron diffraction at room temperature. The influence of the method used for introducing Lu2O3 into the system on the structure and luminescence properties of the samples has been analyzed. The investigation has revealed that the spectra of the samples prepared under the most nonequilibrium conditions are characterized by the Stokes shift and high photoluminescence intensity. This has been explained by the disorder of their crystal structure due to the formation of stable associates of defects.
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Original Russian Text © S.E. Kichanov, E.V. Frolova, G.P. Shevchenko, D.P. Kozlenko, A.V. Belushkin, E.V. Lukin, G.E. Malashkevich, S.K. Rakhmanov, V.P. Glazkov, B.N. Savenko, 2013, published in Fizika Tverdogo Tela, 2013, Vol. 55, No. 4, pp. 745–751.
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Kichanov, S.E., Frolova, E.V., Shevchenko, G.P. et al. Investigation of structural features of the Y3Al5O12: Ce3+/Lu2O3 crystal phosphors formed by the colloidal chemical method. Phys. Solid State 55, 813–820 (2013). https://doi.org/10.1134/S1063783413040136