Influence of laser excitation power on temperature-dependent luminescence behaviour of Ce- and Tb-incorporated BaMgAl10O17 phosphors

Kaynar, Ümit H.; Kaynar, Sermin Çam; Ayvacıklı, M.; Karabulut, Y.; Souadi, G.; Can, N.

doi:10.1016/j.radphyschem.2019.108617

Cited by 22 publications

(6 citation statements)

References 28 publications

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“…On the basis of the Rietveld refinements in Figure b and Table S2, the BAM sample crystallizes in the hexagonal β-alumina structure corresponding to the space group P6 3 / mmc (No. 194). , As shown in Figure c and Table S3, it contains three cation sites, including octahedral Al/MgO 6 , tetrahedral Al/MgO 4 , and pentahedral BaO 6 sites. , Figure d presents the electronic structure of the BAM sample, which shows an indirect band gap of 4.457 eV, and according to the density of states (DOS), the conduction band is due to the cation levels, whereas the valence band is due to the O 2 p orbitals. − Moreover, the SEM image (Figure e) indicates that the BAM particles are hexagonal in shape, and slight agglomeration can be observed due to the solid-state reaction at high temperatures. − Based on the elemental distribution in Figure f, all the elements were homogeneously composited in the BAM particles. Figure g exhibits an HRTEM image of the sample.…”

Section: Resultsmentioning

confidence: 98%

“…194). 28,29 As shown in S3, it contains three cation sites, including octahedral Al/MgO 6 , tetrahedral Al/MgO 4 , and pentahedral BaO 6 sites. 30,31 Figure 1d presents the electronic structure of the BAM sample, which shows an indirect band gap of 4.457 eV, and according to the density of states (DOS), the conduction band is due to the cation levels, whereas the valence band is due to the O 2p orbitals.…”

Section: Resultsmentioning

confidence: 99%

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A Bifunctional Luminescent Whitening and Sensing Material Based on Photoluminescence and Mechanoluminescence

Gu,

Wang,

Wang

et al. 2024

Inorg. Chem.

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A bifunctional luminescent whitening and luminescent sensing composite material, BaMgAl 12 O 17 :Eu 2+ /polydimethylsiloxane (BAM/PDMS), that utilizes natural sunlight and mechanical energy is presented. By increasing the Eu 2+ content, the photoluminescence (PL) excitation spectrum of the material shows a maximum redshift of 23 nm due to 5d level splitting of Eu 2+ , resulting in more spectral overlap with sunlight and an excellent PL whitening effect. Meanwhile, the self-recoverable mechanoluminescence (ML) of the material can be easily excited under mechanical stimuli due to contact electrification, exhibiting a unique stress sensing effect. Based on the unique features of PL whitening and ML sensing, the material is applied to model cars through a spray process, and the results demonstrate that the bifunctional BAM/PDMS material shows promising applications in automobile decoration.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

A Bifunctional Luminescent Whitening and Sensing Material Based on Photoluminescence and Mechanoluminescence

Gu,

Wang,

Wang

et al. 2024

Inorg. Chem.

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“…[62] Work on BAM received impetus due to application in tricolor fluorescent lighting, and rather surprisingly, even after nearly 50 years, the interest and investigations on BAM-related phosphors are continuing. [71][72][73] Apart from Eu 2þ , [74,75] luminescence of several other activators like lanthanides Sm 2þ , [76] Gd 3þ , [77] Ce 3þ , Tb 3þ , [78] and 3d transition metal ions like Cr 3þ , [79,80] Mn 2þ , [81][82][83] and Mn 4þ [84] has also been investigated. Er 3þ and Nd 3þ have also been used as dopants or rather codopants in BAM:Eu.…”

Section: Lamp Phosphorsmentioning

confidence: 99%

Luminescent Materials Based on Aluminates: A Review

Revankar

Gedekar²,

Moharil

2022

Physica Status Solidi (a)

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An aluminate is a compound containing an oxyanion of aluminum. Many aluminates are found in nature. A large number of phosphors that are used in various applications, such as scintillation detectors, optical thermometry, longlasting phosphorescence, solid-state lighting, solid-state lasers, upconversion, bioimaging, and plasma display panels, are based on aluminate formulae. This review focuses on the synthesis and characteristics of such phosphors. The conventional as well as novel methods of synthesizing these phosphors are reviewed. The emphasis on commercially important aluminate phosphors is discussed.

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“…Several methods have been employed to synthesize BAM, including combustion synthesis [28], microwaveassisted heating [29], radio-frequency sputtering [30], coprecipitation [31], solid-state reaction [32,33], and spray pyrolysis [27]. Furthermore, studies have been carried out to investigate the TL properties of UV-irradiated BAM: Eu [34][35][36], optical properties of BAM: Cr [37][38][39], and BAM: Ce, Tb [40].…”

Section: Introductionmentioning

confidence: 99%

Elucidation of trap energies of Gamma-irradiated BaMgAl10O17: Ce3+ phosphors for dosimetry applications

Vidya Saraswathi,

Naregundi,

Sayyed

et al. 2024

Indian J Phys

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This paper presents a comprehensive examination of the thermoluminescence properties of BaMgAl10O17: Ce (BAM: Ce) phosphors, which were synthesized via the combustion method. The study employs five distinct approaches to determine the kinetic parameters for individual traps. To investigate the structural, morphological, and elemental composition of the samples, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy were utilized. The photoluminescence spectra revealed a broad emission centered around 420 nm upon 330 nm excitation. By subjecting the phosphors to γ doses ranging from 5 to 5 kGy and conducting TL glow curve analysis, the kinetic characteristics of the BAM: Ce phosphors were determined. The linear dose–response was observed for 5–50 Gy, indicating a high sensitivity value. Additionally, there is a consistent estimation of trap energy across various methods. It is also worth noting that the phosphor exhibits a very low minimum detectable dose, estimated to be in the microgray range, making BAM: Ce a strong candidate for low gamma dosimetry applications.

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Influence of laser excitation power on temperature-dependent luminescence behaviour of Ce- and Tb-incorporated BaMgAl10O17 phosphors

Cited by 22 publications

References 28 publications

A Bifunctional Luminescent Whitening and Sensing Material Based on Photoluminescence and Mechanoluminescence

A Bifunctional Luminescent Whitening and Sensing Material Based on Photoluminescence and Mechanoluminescence

Luminescent Materials Based on Aluminates: A Review

Elucidation of trap energies of Gamma-irradiated BaMgAl10O17: Ce3+ phosphors for dosimetry applications

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