Optical and luminescence characteristics of Sm3+ doped B2O3-GeO2-Gd2O3 glasses

Gökçe, Melis; Koçyiğit, Deniz

doi:10.1016/j.optmat.2018.06.015

Cited by 40 publications

(6 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, the asymmetry of the environment around the RE ions could be inferred by analyzing the intensity ratio of the forced ED ( 4 G 5/2 → 6 H 9/2 ) to the MD transition ( 4 G 5/2 → 6 H 5/2 ), which is defined as R/O (asymmetry) ratio [41,42]. In figure 3(b), the plot displays the R/O (Red/Orange) luminescence intensity ratio as a function of Sm 3+ ions concentration.…”

Section: Samplementioning

confidence: 99%

See 1 more Smart Citation

Spectroscopic studies of TeO₂-based glasses doped with Sm³⁺ and its use as an optical temperature sensor

Gunha,

Sales,

Muniz

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

This study reports the synthesis and characterization of glasses in the (100-x) 65TeO2-15Li2O-20ZnO + x Sm2O3 system doped with Sm2O3, denoted as Sm3+: TLZ glasses, with varying doping concentrations from 0.1, 0.15, 0.2, 0.35, 0.5, and 1 mol%. The structural and optical properties, as well as the temperature dependence of luminescence, were investigated. Excitation at 405 nm resulted in strong orange-red luminescence at 566, 600, and 646 nm. The local environment surrounding Sm3+ ions was explored using the intensity ratio of electric and magnetic dipole transitions. The non-radiative energy transfer between neighboring Sm3+ ions was evaluated using the Inokuti-Hirayama model, allowing for the determination of the critical transfer distance. The temperature dependence of luminescence, displayed by Commission Internationale de L'Eclairage (CIE) chromaticity coordinates, exhibited a monotonic change from (0.611, 0.387) at 295 K to (0.605, 0.393) at 479 K. The Sm3+:TLZ glasses doped with 0.15 mol% showed the highest relative thermal sensitivity of 0.10%K-1 at 479 K, suggesting their potential as luminescent thermometers.

show abstract

Section: Samplementioning

confidence: 99%

“…The Inokuti-Hirayama model is suitable for describing nonradiative energy transfer processes. By fitting the decay curves, this model can provide information about the dominant mechanism involved in the process of nonradiative energy transfer between a donor and acceptor ion [42,44]. In this study, both the donors and acceptors are Sm 3+ ions.…”

Section: Samplementioning

confidence: 99%

Spectroscopic studies of TeO₂-based glasses doped with Sm³⁺ and its use as an optical temperature sensor

Gunha,

Sales,

Muniz

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…To investigate the nature of bonding between Dy 3+ ions and oxygen ligands in H-0.5Dy-yAg glasses, the nephelauxetic ratio (β) and bonding parameter (δ) were calculated according to equations given elsewhere [48]. Positive or negative value of the bonding parameter signifies the covalent or ionic nature of the bonding between RE ions and ligands.…”

Section: Transmittance and Absorption Spectramentioning

confidence: 99%

Luminescence characteristics of Dy³⁺ doped sodium alumina borate glass: Role of silver

Koçyiğit

Gökçe

2023

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

Metallic nanoparticle doped glasses have been studied as promising candidates for various technological applications due to their ability to improve the luminescence properties of rare earth ions. In this work, Dy2O3 and Ag2O co-doped sodium alumina borate glasses were synthesized by conventional melt-quenching technique. Raman analysis verified the existence of [BO3] and [BO4] groups with B–O stretching vibrations in the prepared glasses. Transmission electron microscope images confirmed the presence of spherical Ag nanoparticles, whose average diameter is about 7.60 nm, in H-0.5Dy1Ag glass matrix. The optical and luminescence properties were investigated according to Ag concentrations. The negative value of the bonding parameters, calculated from the absorption spectra, indicates the ionic nature between the Dy3+ ions and its surrounding ligands. In order to determine the nature of the Dy-O bond and the symmetry around the Dy3+ ion environment, Judd–Ofelt intensity parameters (Ωλ, λ=2, 4, 6) were obtained from the absorption spectra. The luminescence spectra obtained under 350 nm excitation exhibits four emission bands at 481 (4F9/2→6H15/2), 572 (4F9/2→6H13/2), 662 (4F9/2→6H11/2), and 750 (4F9/2→6H9/2) nm. The intensity of emission spectra increases with Ag2O content until 1.0 wt% in H-0.5Dy-yAg glasses and then decreases due to the back-energy transfer from Dy3+ to Ag+. The energy transfer mechanism from Ag+ to Dy3+ ion for H-1Ag-xDy glasses were investigated through Forster-Dexter’s theory and were found to be quadrupole-quadrupole type. The various radiative properties were calculated by using Judd-Ofelt intensity parameters and emission spectra. It was found that the 572 nm emission band, located in the yellow region, has higher radiative parameters. As a function of Ag concentration, the Y/B values, Commission Internationale d'Eclairage (CIE) chromaticity coordinates (x,y) and correlated color temperatures (CCT) were evaluated. The CIE chromaticity coordinates and CCT values of all glasses are located in the white light region. The decay time values of 1S0→3D1 transition of Ag+ ions and 4F9/2→6H13/2 transition of Dy3+ ions confirm the energy transfer from Ag+ to Dy3+ ions. Overall, the present study indicates that the synthesized glasses with Ag addition exhibits improved luminescence, making them potential candidate for wLEDs.

show abstract

“…Rare earth (RE) ion‐doped glasses offer an interesting alternative to single‐crystal and ceramic materials for scintillator and optical applications in high‐energy physics, industry, medical imaging, and lasers due to their high luminescence efficiencies. [ 1–3 ] Samarium trivalent (Sm 3+ ) is known as among the strongest luminescent ions among rare earth ions. In the visible spectrum, it is strongly orange–red corresponding to 4 G 5/2 → 6 H 5/2 , 6 H 7/2 , 6 H 9/2 , and 6 H 11/2 transitions.…”

Section: Introductionmentioning

confidence: 99%

Optical, Photo, and X‐Ray Luminescence Properties of Samarium Ions Doped with Borophosphate Glasses

Kiwsakunkran

Chanthima

Kim

et al. 2022

Physica Status Solidi (a)

View full text Add to dashboard Cite

The optical, photo, and X-ray luminescence properties of Sm 3þ ion-doped Li 2 O-Al 2 O 3 -Gd 2 O 3 -B 2 O 3 -P 2 O 5 glasses are evaluated. The glasses are fabricated by the melt quenching technique. The absorption spectra exhibit the hypersensitive transitions 6 H 5/2 ! 6 P 3/2 and 6 H 5/2 ! 6 F 7/2 at the visible and near-infrared range respectively. The glasses display four major transitions characteristic of Sm 3þ ion for photoluminescence and X-ray luminescence, with the most intense one corresponding to the 4 G 5/2 ! 6 H 7/2 transition. The best emitting samarium concentration obtained by X-ray excitation is compared to BGO crystals. The integral scintillation efficiency of glass is determined by total area under all of peak spectrum. The results indicate the promising application of these glasses in scintillators and for X-ray sensing devices.

show abstract

Optical and luminescence characteristics of Sm3+ doped B2O3-GeO2-Gd2O3 glasses

Cited by 40 publications

References 44 publications

Spectroscopic studies of TeO₂-based glasses doped with Sm³⁺ and its use as an optical temperature sensor

Spectroscopic studies of TeO₂-based glasses doped with Sm³⁺ and its use as an optical temperature sensor

Luminescence characteristics of Dy³⁺ doped sodium alumina borate glass: Role of silver

Optical, Photo, and X‐Ray Luminescence Properties of Samarium Ions Doped with Borophosphate Glasses

Contact Info

Product

Resources

About

Optical and luminescence characteristics of Sm3+ doped B2O3-GeO2-Gd2O3 glasses

Cited by 40 publications

References 44 publications

Spectroscopic studies of TeO2-based glasses doped with Sm3+ and its use as an optical temperature sensor

Spectroscopic studies of TeO2-based glasses doped with Sm3+ and its use as an optical temperature sensor

Luminescence characteristics of Dy3+ doped sodium alumina borate glass: Role of silver

Optical, Photo, and X‐Ray Luminescence Properties of Samarium Ions Doped with Borophosphate Glasses

Contact Info

Product

Resources

About

Spectroscopic studies of TeO₂-based glasses doped with Sm³⁺ and its use as an optical temperature sensor

Spectroscopic studies of TeO₂-based glasses doped with Sm³⁺ and its use as an optical temperature sensor

Luminescence characteristics of Dy³⁺ doped sodium alumina borate glass: Role of silver