Dislocation density level induced divergence between stress-free afterglow and mechanoluminescence in SrAl2O4: Eu2+, Dy3+

Gnidakouong, Joel Renaud Ngouanom; Yun, Gun Jin

doi:10.1016/j.ceramint.2018.10.066

Cited by 34 publications

(20 citation statements)

References 49 publications

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“…Similar to Qu model, Gnidakouong et al [95] considers Dy and oxygen vacancies as electron trapping centres, but also introduces interstitial vacancies as another type of trapping centre. This research work was devoted to explaining the mechanoluminescence of the mate-rial, and also resulted in a suggestion for the persistent luminescence model.…”

Section: Gnidakouong Modelmentioning

confidence: 99%

Recent progress in understanding the persistent luminescence in SrAl₂O₄:Eu,Dy

Vitola

Millers

Bite

et al. 2019

Materials Science and Technology

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Ever since the discovery of SrAl2O4:Eu,Dy persistent afterglow material, that can intensively glow up to 20 h, the mechanism of long-lasting luminescence has been a popular area of research. The research is focused on discovering the mechanism of persistent luminescence in order to prolong the duration and intensity of afterglow in a controlled way. Although most researchers agree on the general things, there are still many unclarities and ambiguities to discuss upon. This review paper briefly sketches in the highlights of past research on the luminescence mechanism in SrAl2O4:Eu,Dy, mainly focusing on the research conducted in the past decade dedicated to clearing these ambiguities. This paper provides an overview of the latest persistent luminescence mechanisms offered by researchers.

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Section: Gnidakouong Modelmentioning

confidence: 99%

Recent progress in understanding the persistent luminescence in SrAl₂O₄:Eu,Dy

Vitola

Millers

Bite

et al. 2019

Materials Science and Technology

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“…To properly test the created system a well-known mechanoluminescent material had to be chosen. Strontium aluminate and epoxy resin composite were chosen due to their being extensively researched currently [6] , [7] , [8] , [9] , [10] , [11] , [12] .…”

Section: Validation and Characterizationmentioning

confidence: 99%

Programmable material testing device for mechanoluminescence measurements

Einbergs

Zolotarjovs

2022

HardwareX

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“…Electron microscopy experiments indicate that the mechanoluminescence in SrAl2O4:Eu 2+ is associated with rearrangements of morphology variants of the monoclinic phase [19]. A recent study [17] observed that increasing the number of dislocations decreases the stress free persistent emission, but increased the mechanoluminescence intensity. The persistent afterglow of Sr4Al14O25:Eu 2+ can be used to reduce the flicker for white LED's [20].…”

Section: Introductionmentioning

confidence: 98%

“…However, quite a few new applications are emerging. Mechanoluminescence can be observed in SrAl2O4:Eu 2+ [6,17], and this property is connected to persistent phosphorescence [18]. Electron microscopy experiments indicate that the mechanoluminescence in SrAl2O4:Eu 2+ is associated with rearrangements of morphology variants of the monoclinic phase [19].…”

Section: Introductionmentioning

confidence: 99%