Effect of Annealing on the Luminescence of YAG:Ce and YAGG:Ce Ceramics Synthesized in a Radiation Field

Mussakhanov, Dossymkhan; Тулегенова, А. Т.; Лисицын, В. М.; Golkovski, Mikhail G.; Karipbayev, Zhakyp; Купчишин, А. И.; Степанов, С. А.

doi:10.3103/s1062873820070205

Cited by 7 publications

(6 citation statements)

References 14 publications

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“…However, the synthesis of ceramics under electron beam pulse irradiation is fundamentally different from the other methods. High ionization density, and not Thus, through the action of a powerful radiation flux on the powder mixture, it is possible to form YAG:Ce-based luminescent ceramics with characteristics similar to those known YAG:Ce phosphors and ceramics obtained using traditional methods [40,41,[49][50][51][52].…”

Section: Resultsmentioning

confidence: 99%

Electron Beam-Assisted Synthesis of YAG:Ce Ceramics

et al. 2023

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In this work, we present the results of the structure and luminescence properties of YAG:Ce (Y3Al5O12 doped with Ce3+ ions) ceramic samples. Their synthesis was carried out by sintering samples from the initial oxide powders under the powerful action of a high-energy electron beam with an energy of 1.4 MeV and a power density of 22–25 kW/cm2. The measured diffraction patterns of the synthesized ceramics are in good agreement with the standard for YAG. Luminescence characteristics at stationary/time-resolved regimes were studied. It is shown that under the influence of a high-power electron beam on a mixture of powders, it is possible to synthesize YAG:Ce luminescent ceramics with characteristics close to the well-known YAG:Ce phosphor ceramics obtained by traditional methods of solid-state synthesis. Thus, it has been demonstrated that the technology of radiation synthesis of luminescent ceramics is very promising.

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Section: Resultsmentioning

confidence: 99%

Electron Beam-Assisted Synthesis of YAG:Ce Ceramics

et al. 2023

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“…The choice of the activator concentration of 2 % is explained by the following. Previous studies [17,18] have shown that 2 % Ce is the optimal concentration for YAG ceramics. The formation of radiation synthesis technology is at the very beginning.…”

Section: Methodsmentioning

confidence: 92%

Luminescence efficiency of cerium-doped yttrium aluminum garnet ceramics formed by radiation assisted synthesis

Alpyssova

Лисицын

Golkovski

et al. 2021

EEJET

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The variety of applications of yttrium-aluminum garnet (YAG)-based luminescent materials and the morphology necessary for these purposes required the development of many technologies for their synthesis. All synthesis technologies used are complex. The structural phase of yttrium-aluminum garnet is formed with any technology, at temperatures exceeding 1,500 °C. The starting materials for the synthesis are metal oxides of aluminum, yttrium and other oxides for activation and modification. It seems possible to use hard radiation to form a new phase. Radiation synthesis of ceramics is realized in less than 1 s, without the use of any additives and influences. The synthesis was carried out at the electron accelerator of the Institute of Nuclear Physics (Novosibirsk). In this work, we studied the spectral-kinetic and quantitative characteristics of luminescence for the first time obtained by the method of radiation synthesis of ceramic samples of yttrium-aluminum garnet doped with cerium with statistical processing of their values. The dependences of the reproducibility of the spectral characteristics of the luminescence of the samples on the preliminary preparation of the charge for synthesis have been investigated. Several cycles of luminophore brightness studies have been performed. It is shown that the obtained ceramics based on yttrium-aluminum garnet doped with cerium possesses the required spectral-kinetic properties, and the efficiency of conversion of the chip radiation into luminescence is achieved, which is comparable to that available in commercial phosphors. The maximum measured values of the position of the bands are from 553.5 to 559.6 nm. Brightness values range from 4,720 to 1,960 cd/m2. It was found that the main reason for the scatter in the characteristics of the luminescent properties of ceramics of yttrium-aluminum garnet, activated by cerium obtained by radiation assisted synthesis is the high rate of synthesis and, especially, the high rate of cooling of the samples.

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“…Представляется перспективным использование метода радиационного синтеза для получения образцов керамики для изучения зависимостей свойств от исходного состава шихты. Возможность использования радиации для синтеза керамики из тугоплавких оксидов была продемонстрирована на примере иттрий алюминиевого граната ИАГ : Се [5][6]. Радиационный синтез керамики реализуется за короткое время из смеси оксидов металлов стехиометрического состава, не требующей сложной подготовки.…”

Section: Introductionunclassified

Радиационный синтез и люминесцентные свойства Y-=SUB=-3-=/SUB=-Al-=SUB=-x-=/SUB=-Ga-=SUB=-5-x-=/SUB=-O-=SUB=-12-=/SUB=-:Ce керамики

Лисицын¹,

Гречкина²,

Тулегенова³

2023

Физика Твердого Тела

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Y3AlxGa5-xO12:Ce ceramics with an Al/Ga ratio from 5/0 to 0/5 was synthesized for the first time by direct impact of a powerful electron beam with an energy of 1.4 MeV on a charge of stoichiometric composition. The study results of dependence of the spectral properties and the conversion efficiency the excitation energy into luminescence on the ceramic composition are presented. A difference was found between the dependences of the efficiency of transformation of the excitation energy into luminescence on the Al/Ga ratio upon excitation of cerium ions at 450 and 337 nm.

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Effect of Annealing on the Luminescence of YAG:Ce and YAGG:Ce Ceramics Synthesized in a Radiation Field

Cited by 7 publications

References 14 publications

Electron Beam-Assisted Synthesis of YAG:Ce Ceramics

Electron Beam-Assisted Synthesis of YAG:Ce Ceramics

Luminescence efficiency of cerium-doped yttrium aluminum garnet ceramics formed by radiation assisted synthesis

Радиационный синтез и люминесцентные свойства Y-=SUB=-3-=/SUB=-Al-=SUB=-x-=/SUB=-Ga-=SUB=-5-x-=/SUB=-O-=SUB=-12-=/SUB=-:Ce керамики

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