Aerosol Synthesis of Highly Dispersed Y3Al5O12:Ce3+ Phosphor with Intense Photoluminescence

Абдуллин, Х.А.; Kemelbekova, Ainagul; Лисицын, В. М.; Мухамедшина, Д.М.; Немкаева, Р.Р.; Тулегенова, А. Т.

doi:10.1134/s1063783419100020

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…Other methods for the synthesis of luminescent materials based on YAG have been developed and are being improved. For example, the sol-gel method [10][11][12] and coprecipitation [13,14] produce ceramics and phosphors by using a combination of chemical reactions between substances containing the elements necessary for the formation of YAG. All these methods are complex; elements of the auxiliary materials used for the synthesis are preserved in the final products.…”

Section: Introductionmentioning

confidence: 99%

The Optimization of Radiation Synthesis Modes for YAG:Ce Ceramics

et al. 2023

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Synthesis in the radiation field is a promising direction for the development of materials transformation processes, especially those differing in melting temperature. It has been established that the synthesis of yttrium–aluminum ceramics from yttrium oxides and aluminum metals in the region of a powerful high-energy electron flux is realized in 1 s, without any manifestations that facilitate synthesis, with high productivity. It is assumed that the high rate and efficiency of synthesis are due to processes that are realized with the formation of radicals, short-lived defects formed during the decay of electronic excitations. This article presents descriptions of the energy-transferring processes of an electron stream with energies of 1.4, 2.0, and 2.5 MeV to the initial radiation (mixture) for the production of YAG:Ce ceramics. YAG:Ce (Y3Al5O12:Ce) ceramics samples in the field of electron flux of different energies and power densities were synthesized. The results of a study of the dependence of the morphology, crystal structure, and luminescence properties of the resulting ceramics on the synthesis modes, electron energy, and electron flux power are presented.

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Section: Introductionmentioning

confidence: 99%

The Optimization of Radiation Synthesis Modes for YAG:Ce Ceramics

et al. 2023

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“…There are also alternative synthesis methods [13][14][15][16][17][18], for instance, the arc plasma melting technique, where initial powders are ground in and pressed under high pressure. Arc plasma synthesis was conducted in the arc furnace.…”

Section: Introductionmentioning

confidence: 99%

Efficiency Dependence of Radiation-Assisted Ceramic Synthesis Based on Metal Oxides and Fluorides on Initial Powder Particle Sizes

Lisitsyn,

Polisadova,

Lisitsyna

et al. 2023

Photonics

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The study is devoted to investigating the efficiency dependence of radiation-assisted ceramic synthesis based on metal oxides and fluorides on initial powder particle sizes. The synthesis was performed for 30 series of ceramic samples, including MgO, Al2O3, ZnO, ZrO2, MgF2, and complex compositions: cerium-activated yttrium-aluminum garnet (Y3Al5O12), spinel AlMgO4, and tungstate MgWO4. The synthesis efficiency was evaluated on the mixture weight magnitude losses, morphology, and relative weight of the obtained ceramic samples. Based on the analysis of the synthesis results and measuring the particle distribution spectra of the initial materials, the criteria for selecting the initial materials were established, and possible explanations for the correlation between synthesis efficiency and the initial materials morphology were proposed.

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“…There are also alternative methods of synthesis [16][17][18][19]. For example, the sol-gel method involves the formation of molecules with the desired composition through chemical reactions from precursors.…”

Section: Introductionmentioning

confidence: 99%

Radiation Synthesis of High-Temperature Wide-Bandgap Ceramics

Lisitsyn,

Tulegenova,

Golkovski

et al. 2023

Micromachines

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This paper presents the results of ceramic synthesis in the field of a powerful flux of high-energy electrons on powder mixtures. The synthesis is carried out via the direct exposure of the radiation flux to a mixture with high speed (up to 10 g/s) and efficiency without the use of any methods or means for stimulation. These synthesis qualities provide the opportunity to optimize compositions and conditions in a short time while maintaining the purity of the ceramics. The possibility of synthesizing ceramics from powders of metal oxides and fluorides (MgF2, BaF2, WO3, Ga2O3, Al2O3, Y2O3, ZrO2, MgO) and complex compounds from their stoichiometric mixtures (Y3Al3O12, Y3AlxGa(5-x) O12, MgAl2O4, ZnAl2O4, MgWO4, ZnWO4, BaxMg(2-x) F4), including activators, is demonstrated. The ceramics synthesized in the field of high-energy electron flux have a structure and luminescence properties similar to those obtained by other methods, such as thermal methods. The results of studying the processes of energy transfer of the electron beam mixture, quantitative assessments of the distribution of absorbed energy, and the dissipation of this energy are presented. The optimal conditions for beam treatment of the mixture during synthesis are determined. It is shown that the efficiency of radiation synthesis of ceramics depends on the particle dispersion of the initial powders. Powders with particle sizes of 1–10 µm, uniform for the synthesis of ceramics of complex compositions, are optimal. A hypothesis is put forward that ionization processes, resulting in the radiolysis of particles and the exchange of elements in the ion–electron plasma, dominate in the formation of new structural phases during radiation synthesis.

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Aerosol Synthesis of Highly Dispersed Y3Al5O12:Ce3+ Phosphor with Intense Photoluminescence

Cited by 5 publications

References 18 publications

The Optimization of Radiation Synthesis Modes for YAG:Ce Ceramics

The Optimization of Radiation Synthesis Modes for YAG:Ce Ceramics

Efficiency Dependence of Radiation-Assisted Ceramic Synthesis Based on Metal Oxides and Fluorides on Initial Powder Particle Sizes

Radiation Synthesis of High-Temperature Wide-Bandgap Ceramics

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