Effect of annealing temperature on persistent luminescence of Y3Al2Ga3O12:Cr3+ co-doped with Ce3+ and Pr3+

Dai, Zhengfa; Boiko, Vitalii; Grzeszkiewicz, Karina; Markowska, Marta; Ursi, Federica; Hölsä, Jorma; Saladino, Maria Luisa; Hreniak, Dariusz

doi:10.1016/j.optmat.2020.110522

Cited by 22 publications

(21 citation statements)

References 64 publications

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“…λ exc : 450 nm and λ em : 520 nm at RT. www.nature.com/scientificreports/ number of surface defects decreases (as O-H groups on the surface 63,64 ). As a consequence, the number of shallow traps decreases.…”

Section: Optical Propertiesmentioning

confidence: 99%

Particle size-related limitations of persistent phosphors based on the doped Y3Al2Ga3O12 system

Boiko

Dai

Markowska

et al. 2021

Sci Rep

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Co-doped Ce3+, Cr3+ and Pr3+ yttrium–aluminium–gallium garnet powders of various sizes were obtained by co-precipitation method. The microstructure and morphology were investigated by XRPD, TEM and gas porosimetry. The luminescence properties were studied by excitation and emission spectra, quantum yield and decay times. Thermoluminescence measurements were performed to evaluate the activation energy, traps redistribution and frequency factor. Limitation in the energy transfer between dopant ions in the small particles, traps depth and surface defects were considered and investigated as responsible for the quenching of persistent luminescence. The phosphors annealed at 1100 °C show the optimal persistent luminescence and nano-particle size.

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Section: Optical Propertiesmentioning

confidence: 99%

Particle size-related limitations of persistent phosphors based on the doped Y3Al2Ga3O12 system

Boiko

Dai

Markowska

et al. 2021

Sci Rep

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“…Rare-earth ion spectroscopy has become a trigger for new, now widely used, application areas, such as optical displays, solid-state lighting, optical temperature sensors, biomarkers, optical heaters etc. Phosphors doped with rare-earth ions that show specific spectral properties required for different applications are often referred to as the next generation illumination sources [11][12][13][14].…”

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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“…The average crystallite size increases by increasing the temperature for both series, as already observed. 30 , 40 …”

Section: Resultsmentioning

confidence: 99%

Urea Glass Route as a Way to Optimize YAGG:Ce³⁺,Cr³⁺,Pr³⁺ Nanocrystals for Persistent Luminescence Applications

et al. 2022

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A new approach for the synthesis of Y 3 Al 2 Ga 3 O 12 (YAGG) nanophosphors allowing the preparation of crystallites with sizes starting from 45 nm is presented. The controllability of the energy and trap density of the resulting material samples by annealing temperature was confirmed by thermoluminescence (TL) measurements. It has been shown that the annealing of samples at temperatures up to 1300 °C does not cause any substantial growth of crystallites, still remaining below 100 nm, but leads to changes in the activation energy of the persistent luminescence (PersL) process. On the other hand, annealing above 1400 °C results in grain growth on the submicron scale, which was confirmed by X-ray powder diffraction (XRPD) and electron transmission microscopy (TEM) measurements. In addition, with an increase in the molar ratio of urea to the total amount of metals used ( R ), qualitative changes are observed in the PersL process occurring from the excited states of Cr 3+ and Pr 3+ ions. This proves the influence of the synthesis process, in particular of the metal complexation at its initial stage, on the final structure ordering in the annealed materials. These observations are linked to previously reported defects in the YAGG structure, leading to PersL.

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Effect of annealing temperature on persistent luminescence of Y3Al2Ga3O12:Cr3+ co-doped with Ce3+ and Pr3+

Cited by 22 publications

References 64 publications

Particle size-related limitations of persistent phosphors based on the doped Y3Al2Ga3O12 system

Particle size-related limitations of persistent phosphors based on the doped Y3Al2Ga3O12 system

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

Urea Glass Route as a Way to Optimize YAGG:Ce³⁺,Cr³⁺,Pr³⁺ Nanocrystals for Persistent Luminescence Applications

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Effect of annealing temperature on persistent luminescence of Y3Al2Ga3O12:Cr3+ co-doped with Ce3+ and Pr3+

Cited by 22 publications

References 64 publications

Particle size-related limitations of persistent phosphors based on the doped Y3Al2Ga3O12 system

Particle size-related limitations of persistent phosphors based on the doped Y3Al2Ga3O12 system

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

Urea Glass Route as a Way to Optimize YAGG:Ce3+,Cr3+,Pr3+ Nanocrystals for Persistent Luminescence Applications

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Product

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Urea Glass Route as a Way to Optimize YAGG:Ce³⁺,Cr³⁺,Pr³⁺ Nanocrystals for Persistent Luminescence Applications