Functional Materials, 23, No.2 (2016), p.191-196.
Defects related luminescence in yttrium-aluminum garnet crystals
Institute for Scintillation Materials, STC Institute for Single Crystals National Academy of Sciences of Ukraine, 60 Lenina Ave., 61001 Kharkov, Ukraine
Correlation between growth conditions, point defects appearance, their absorption and spectral-kinetic luminescence characteristics in yttrium-aluminum garnet-based crystals is analyzed. The physical processes are strongly related to the intrinsic lattice defects and composition deviation from the stoichiometry. It is shown that presence of antisite and vacancy-type defects or foreign atoms incorporation results in additional channels of excitation energy dissipation in pure and doped yttrium-aluminum garnet crystals.
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