Cathodoluminescence of oxyfluoride glass-ceramics

Rogulis, U.; Elsts, E.; Jansons, J.; Šarakovskis, Anatolijs; Doke, Guna; Stunda, A.; Šmits, Krišjānis

doi:10.1016/j.radmeas.2012.12.020

Cited by 7 publications

(6 citation statements)

References 6 publications

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“…Cracking, which can occur during the drying and sintering processes, is the main issue that needs to be addressed during the synthesis process. According to the literature [ 4 , 5 ], a slow drying process is often used to prevent uneven gel shrinkage and reduce capillary pressure, which can lead to sample cracking. Therefore, we suggest that a slow drying procedure (2 weeks) is optimal for these samples to effectively remove excess water (mainly OH groups) and solvent molecules that can affect the SrAl 2 O 4 phosphor’s luminescent properties.…”

Section: Resultsmentioning

confidence: 99%

“…The persistent luminescence properties of Eu and Dy-doped strontium aluminate luminophores include a long fading time, unsurpassed intensity, and good chemical stability [ 1 , 2 ]. The already wide field of possible applications of PeL materials is currently being supplemented by ongoing research work on embedding the material in different mediums, such as cloth, polymers, and glass systems [ 3 , 4 , 5 , 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

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Sol–Gel Synthesis of Translucent and Persistent Luminescent SiO2@ SrAl2O4 Eu, Dy, B Materials

Leimane,

Krizmane,

Bite

et al. 2023

Materials

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This publication offers an economically promising method of persistent luminescent silicate glass synthesis that does not involve high temperatures or ready-made (separately synthesized) PeL particles. In this study, we demonstrate the formation of SrAl2O4 doped with Eu, Dy, and B in a SiO2 glass structure using the one-pot low-temperature sol–gel synthesis method. By varying the synthesis conditions, we can use water-soluble precursors (e.g., nitrates) and a dilute aqueous solution of rare-earth (RE) nitrates as starting materials for SrAl2O4 synthesis, which can be formed during the sol–gel process at relatively low sintering temperatures (600 °C). As a result, translucent, persistently luminescent glass is obtained. The glass shows the typical Eu2+ luminescence and the characteristic afterglow. The afterglow duration is about 20 s. It is concluded that the slow drying procedure (2 weeks) is optimal for these samples to sufficiently get rid of the excess water (mainlyOH groups) and solvent molecules that can influence the strontium aluminate luminescence properties and have a pernicious effect on the afterglow. It can also be concluded that boron is playing a crucial role in the formation of trapping centers needed for PeL processes in the PeL silicate glass.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sol–Gel Synthesis of Translucent and Persistent Luminescent SiO2@ SrAl2O4 Eu, Dy, B Materials

Leimane,

Krizmane,

Bite

et al. 2023

Materials

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“…Finally, it should be noted that in recent years, the research and development of various combinations of glass, polymer, and nanoparticle compositions for radiation protection has become a highly topical, and as a result, many different glass combinations have been successfully synthesized and evaluated [ 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 ].…”

Section: Resultsmentioning

confidence: 99%

Investigation of the Efficiency of Shielding Gamma and Electron Radiation Using Glasses Based on TeO2-WO3-Bi2O3-MoO3-SiO to Protect Electronic Circuits from the Negative Effects of Ionizing Radiation

et al. 2022

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This article considers the effect of MoO3 and SiO additives in telluride glasses on the shielding characteristics and protection of electronic microcircuits operating under conditions of increased radiation background or cosmic radiation. MoO3 and SiO dopants were chosen because their properties, including their insulating characteristics, make it possible to avoid breakdown processes caused by radiation damage. The relevance of the study consists in the proposed method of using protective glasses to protect the most important components of electronic circuits from the negative effects of ionizing radiation, which can cause failures or lead to destabilization of the electronics. Evaluation of the shielding efficiency of gamma and electron radiation was carried out using a standard method for determining the change in the threshold voltage (∆U) value of microcircuits placed behind the shield and subjected to irradiation with various doses. It was established that an increase in the content of MoO3 and SiO in the glass structure led to an increase of up to 90% in the gamma radiation shielding efficiency, while maintaining the stability of microcircuit performance under prolonged exposure to ionizing radiation. The results obtained allow us to conclude that the use of protective glasses based on TeO2–WO3–Bi2O3–MoO3–SiO is highly promising for creating local protection for the main components of microcircuits and semiconductor devices operating under conditions of increased background radiation or cosmic radiation.

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“…X-ray induced luminescence showed that among the studied samples the most intense was a terbium activated glass ceramics sample -the integrated area of the spectral curve was about 10 times smaller than that of etalon sample CsI:Tl. Cathodoluminescence measurements showed that a cerium activated glass ceramics sample had the fastest decay times -average decay time was approximately 1.7 ls [12].…”

Section: Introductionmentioning

confidence: 98%

“…In our previous researches [11,12] we have studied terbium, cerium and europium activated oxyfluoride glasses and glass ceramics using various methods: differential thermal analysis, X-ray diffraction, cathodoluminescence and X-ray induced luminescence. X-ray induced luminescence showed that among the studied samples the most intense was a terbium activated glass ceramics sample -the integrated area of the spectral curve was about 10 times smaller than that of etalon sample CsI:Tl.…”

Section: Introductionmentioning

confidence: 99%

Studies of radiation defects in cerium, europium and terbium activated oxyfluoride glasses and glass ceramics

et al. 2015

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Cathodoluminescence of oxyfluoride glass-ceramics

Cited by 7 publications

References 6 publications

Sol–Gel Synthesis of Translucent and Persistent Luminescent SiO2@ SrAl2O4 Eu, Dy, B Materials

Sol–Gel Synthesis of Translucent and Persistent Luminescent SiO2@ SrAl2O4 Eu, Dy, B Materials

Investigation of the Efficiency of Shielding Gamma and Electron Radiation Using Glasses Based on TeO2-WO3-Bi2O3-MoO3-SiO to Protect Electronic Circuits from the Negative Effects of Ionizing Radiation

Studies of radiation defects in cerium, europium and terbium activated oxyfluoride glasses and glass ceramics

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