Blue afterglow in Eu2+ doped CaAl2O4 by electron irradiation

Kaur, Puneet; Khanna, Atul

doi:10.1016/j.mseb.2021.115569

Cited by 4 publications

(1 citation statement)

References 25 publications

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“…The traps included V •• O , V ″ Ca , Eu • Ca , and Dy • Ca , which were produced during the solid-state reaction . Previous studies ,, have reported that the afterglow mechanism of CaAl 2 O 4 :Eu 2+ , Dy 3+ can be explained by the transition of the ground-state 4f 7 electrons of Eu 2+ to excited-state 4f 6 5d 1 under ultraviolet-light irradiation. The excited-state energy level exhibited a certain energy-level width.…”

Section: Luminescence Mechanismmentioning

confidence: 99%

Synthesis of a CaAl₂O₄:Eu²⁺, Dy³⁺ Phosphor by the Polymer Slurry Method and Its Application in Anticounterfeiting

Shi

Wang

Yang

et al. 2023

Ind. Eng. Chem. Res.

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CaAl 2 O 4 :Eu 2+ , Dy 3+ long-afterglow-luminescence materials were prepared by a high-temperature solid-state reaction assisted by the polymer slurry method (HTSSR-PS). Xray diffraction and scanning electron microscopy were employed to observe the crystal structure and microstructure of CaAl 2 O 4 :Eu 2+ , Dy 3+ phosphors. In addition, density functional theory calculations were utilized to investigate the electronic and crystal structures of CaAl 2 O 4 . Fluorescence spectra and afterglow decay curves characterized luminescence properties. Thermoluminescence curves characterized the optical storage performance. CaAl 2 O 4 :Eu 2+ , Dy 3+ sintered at 1300 °C exhibited the highest crystallinity and the best afterglow performance. Compared to the conventional HTSSR method, the calcination temperature was significantly lower, and the performance was improved. The method was simple, with lower energy consumption, and it was more suitable for large-scale production. In addition, the application of CaAl 2 O 4 :Eu 2+ , Dy 3+ in dynamic anticounterfeiting was demonstrated by exploiting a unique afterglow property.

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Section: Luminescence Mechanismmentioning

confidence: 99%

Synthesis of a CaAl₂O₄:Eu²⁺, Dy³⁺ Phosphor by the Polymer Slurry Method and Its Application in Anticounterfeiting

Shi

Wang

Yang

et al. 2023

Ind. Eng. Chem. Res.

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show abstract

Comparative study of Eu3+ doped calcium borate glasses and crystalline calcium hexaborate phosphors

Sharma,

Middha,

Khanna

et al. 2024

J Mater Sci: Mater Electron

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Effect of reducing and oxidizing atmosphere on photoluminescence of undoped and Eu doped nanostructured CaAl2O4

Chernov

Piters

Ruiz-Torres

et al. 2022

Journal of Luminescence

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Blue afterglow in Eu2+ doped CaAl2O4 by electron irradiation

Cited by 4 publications

References 25 publications

Synthesis of a CaAl₂O₄:Eu²⁺, Dy³⁺ Phosphor by the Polymer Slurry Method and Its Application in Anticounterfeiting

Synthesis of a CaAl₂O₄:Eu²⁺, Dy³⁺ Phosphor by the Polymer Slurry Method and Its Application in Anticounterfeiting

Comparative study of Eu3+ doped calcium borate glasses and crystalline calcium hexaborate phosphors

Effect of reducing and oxidizing atmosphere on photoluminescence of undoped and Eu doped nanostructured CaAl2O4

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Blue afterglow in Eu2+ doped CaAl2O4 by electron irradiation

Cited by 4 publications

References 25 publications

Synthesis of a CaAl2O4:Eu2+, Dy3+ Phosphor by the Polymer Slurry Method and Its Application in Anticounterfeiting

Synthesis of a CaAl2O4:Eu2+, Dy3+ Phosphor by the Polymer Slurry Method and Its Application in Anticounterfeiting

Comparative study of Eu3+ doped calcium borate glasses and crystalline calcium hexaborate phosphors

Effect of reducing and oxidizing atmosphere on photoluminescence of undoped and Eu doped nanostructured CaAl2O4

Contact Info

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About

Synthesis of a CaAl₂O₄:Eu²⁺, Dy³⁺ Phosphor by the Polymer Slurry Method and Its Application in Anticounterfeiting

Synthesis of a CaAl₂O₄:Eu²⁺, Dy³⁺ Phosphor by the Polymer Slurry Method and Its Application in Anticounterfeiting