Express Synthesis of YAG:Ce Ceramics in the High-Energy Electrons Flow Field
Lisitsyn V. Tulegenova A. Kaneva E. Mussakhanov D. Gritsenko B.
February 2023MDPI
Materials
2023#16Issue 3
YAG:Ce ceramics by the direct action of an electron beam with 1.4 MeV energy were synthesized on a mixture of a stoichiometric composition of Y, Al, and Ce oxides without adding any substances to facilitate the process. The synthesis is realized in a time less than 1 s. The main structural phase of the obtained ceramics is YAG and YAP can be additional. The luminescence characteristics of the synthesized samples, the excitation, luminescence, decay time, and pulsed cathodoluminescence spectra, are similar to those known for YAG:Ce phosphors. The conversion efficiency of the excitation energy into the luminescence of the samples reaches 60–70% of those used for the manufacture of LED phosphors. The set of processes that determine the rate and efficiency of radiation synthesis differs from those occurring during thermal methods by the existence of a high degree of the initial compositions’ ionization under the influence of a radiation flux and a high probability of the decay of electronic excitations into short-lived radiolysis products.
ceramics , luminescence , oxides , radiation synthesis , yttrium–aluminum garnet
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Department of Materials Science, Engineering School, National Research Tomsk Polytechnic University, 30 Lenin Ave, Tomsk, 634050, Russian Federation
Department of Solid State and Nonlinear Physics, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty, 050040, Kazakhstan
X-ray Analysis Laboratory, Vinogradov Institute of Geochemistry SB RAS, 1A Favorsky Str., Irkutsk, 664033, Russian Federation
Department of Radio Engineering, Electronics and Telecommunications, Eurasian National University L.N. Gumilyov, Str. Satpaeva 2, Astana, 010008, Kazakhstan
Department of Materials Science
Department of Solid State and Nonlinear Physics
X-ray Analysis Laboratory
Department of Radio Engineering
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