Formation of Luminescing High-Temperature Ceramics upon Exposure to Powerful High-Energy Electron Flux

Лисицын, В. М.; Лисицына, Л. А.; Голковский, М. Г.; Мусаханов, Д. А.; Ermolaev, A. V.

doi:10.1007/s11182-021-02213-9

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…This conclusion is consistent for both nanopowder-based synthesis and the synthesis from larger grain sizes. It is likely that in the region with the highest absorbed energy density [14][15][16][17][18][19][20][21], the rate of new YAG phase formation is so rapid that charged particles do not have the opportunity to leave the reactor zone before the decomposition of the initial particles occurs.…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies have shown that YAG:Ce ceramics can be synthesized from refractory metal oxides using a powerful electron beam without the need for additional substances to facilitate the synthesis [15,16]. These studies have demonstrated the possibility of synthesizing ceramics in times shorter than 1 s, making it a highly attractive method for synthesizing YAG:Ce phosphors.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Precursor Prehistory on the Efficiency of Radiation-Assisted Synthesis and Luminescence of YAG:Ce Ceramics

et al. 2023

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The quality of synthesized materials is affected by various factors such as the prehistory of substances used and the synthesis technology. Most methods for synthesizing luminescent ceramics based on metal oxides rely on high-temperature heating to facilitate the necessary exchange of elements between precursor particles. However, a promising alternative method involves the direct application of a powerful high-energy radiation flux, which stimulates different processes. The formation of ceramics through this method occurs in a highly ionized medium, which may produce different results from those achieved through thermal exposure. This paper reports the findings of a study that explores the relationship between the morphology and luminescent properties of YAG:Ce ceramics and the characteristics of Y2O3 and Al2O3 oxides used in the synthesis, such as dispersity and activator concentration. The results indicate that the morphology of the synthesized ceramic samples is significantly affected by the dispersity of the powder mixture used.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Precursor Prehistory on the Efficiency of Radiation-Assisted Synthesis and Luminescence of YAG:Ce Ceramics

et al. 2023

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“…A series of luminescence properties studies of the synthesized YAG:Ce ceramics was performed. Photoexcitation and photoluminescence (PL) spectra under stationary conditions using a Cary Eclipse spectrofluorometer and time-resolved cathodoluminescence (CL) spectra using a pulsed electron accelerator with an energy of 250 keV for excitation [ 17 , 18 , 19 , 20 ]. In a generalized form, the spectral-kinetic properties of the obtained YAG:Ce ceramics are shown in Figure 4 .…”

Section: Materials Synthesismentioning

confidence: 99%

Express Synthesis of YAG:Ce Ceramics in the High-Energy Electrons Flow Field

et al. 2023

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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.

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The Influence of the Initial Charge Compaction on the Radiation Synthesis of YAG:Се Ceramics

et al. 2022

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Formation of Luminescing High-Temperature Ceramics upon Exposure to Powerful High-Energy Electron Flux

Cited by 5 publications

References 16 publications

Effect of Precursor Prehistory on the Efficiency of Radiation-Assisted Synthesis and Luminescence of YAG:Ce Ceramics

Effect of Precursor Prehistory on the Efficiency of Radiation-Assisted Synthesis and Luminescence of YAG:Ce Ceramics

Express Synthesis of YAG:Ce Ceramics in the High-Energy Electrons Flow Field

The Influence of the Initial Charge Compaction on the Radiation Synthesis of YAG:Се Ceramics

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