Enhanced optical properties of YAG:Ce yellow phosphor by modification with gold nanoparticles

Ţucureanu, Vasilica; Munteanu, Daniel

doi:10.1016/j.ceramint.2019.01.061

Cited by 21 publications

(8 citation statements)

References 36 publications

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“…The measurement results are shown in Table 2. The given values of the characteristics of the luminescence bands correspond well to those known for crystals, ceramics, phosphors based on YAG:Ce [19][20][21][22][23]. In general, it can be seen that the spread of the measured values of the characteristics of the bands in the samples of the series from the pre-compacted charge (50, 51, 53 and 55) is less than from the uncompacted ones (56, 57, 58, 60, 80).…”

Section: Investigation Of Photoluminescence Of Synthesized Samplessupporting

confidence: 81%

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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Section: Investigation Of Photoluminescence Of Synthesized Samplessupporting

confidence: 81%

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 growing need for light emitting diodes (LEDs) and lasers by the human society demands safe, environmentally friendly synthesis techniques for fabrication of low-cost novel materials with better and improved properties. One of the most suitable ways to solve the need for this demand is to improve the already existing compounds by modifying their chemical composition and, in such a way, tuning their already excellent properties such as quantum yield, emission color, thermal and radiation stability needed for practical applications [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Sol-gel assisted molten-salt synthesis of novel single phase Y3–2xCa2xTaxAl5−xO12:1%Eu garnet structure phosphors

Skruodiene

Juodvalkyte

Inkrataite

et al. 2022

Journal of Alloys and Compounds

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“…Pronounced photoluminescence was observed upon excitation by a laser with a wavelength of 450 nm for all YAG:Ce ceramic samples. The spectra exhibit a broad luminescence band in the wavelength range of approximately 480–660 nm, which is characteristic of YAG activated by Ce 3+ ions 23 …”

Section: Resultsmentioning

confidence: 99%

“…However, there is no information in the references about attempts to create and study YAG:Ce doped with silver NPs. The only similar work found was a dedicated study on the synthesis and investigation of modified YAG:Ce ceramic powder with gold NPs 23 . The authors successfully synthesized the YAG:Ce–Au composite and investigated its structure, optical properties, and luminescence.…”

Section: Introductionmentioning

confidence: 99%

“…The only similar work found was a dedicated study on the synthesis and investigation of modified YAG:Ce ceramic powder with gold NPs. 23 The authors successfully synthesized the YAG:Ce-Au composite and investigated its structure, optical properties, and luminescence. Previous research has demonstrated that the addition of silver NPs to YAG:Ce ceramic powder enhances luminescence.…”

Section: Introductionmentioning

confidence: 99%

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Silver nanoparticles as a new sintering additive for the fabrication of YAG:Ce optical luminescent ceramics

Kravtsov,

Medyanik,

Tarala

et al. 2023

J Am Ceram Soc.

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In this study, silver nanoparticles (NPs) were considered for the first time as a sintering additive in the manufacture of YAG:Ce luminescent ceramics. The influence of the addition of silver NPs on the sintering kinetics of ceramics was investigated. It was found that the addition of Ag NPs in the concentration range of 0.027–0.44 wt% does not result in the formation of secondary phases in YAG:Ce ceramics. It was demonstrated that the light transmission of ceramics is dependent on the concentration of Ag NPs. The use of NPs additive has made it possible to increase the light transmission of ceramics compared with the reference sample without sintering additives. The combination of two sintering additives, TEOS and silver NPs, enables the achievement of enhanced optical transparency in ceramics compared to the individual application of sintering additives. At an optimal silver concentration of 0.11 wt%, in combination with 0.5 wt% TEOS, a ceramic light transmission value of 77% was attained. The study has identified a correlation between the luminescence intensity of YAG:Ce ceramics and the concentration of silver NPs. It was observed that the utilization of low concentrations of the Ag additive had negligible impact on the luminescence properties, whereas the introduction of high concentrations of Ag NPs led to a deterioration in the luminescence and optical transparency of the ceramic.

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Enhanced optical properties of YAG:Ce yellow phosphor by modification with gold nanoparticles

Cited by 21 publications

References 36 publications

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

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

Sol-gel assisted molten-salt synthesis of novel single phase Y3–2xCa2xTaxAl5−xO12:1%Eu garnet structure phosphors

Silver nanoparticles as a new sintering additive for the fabrication of YAG:Ce optical luminescent ceramics

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