Physical, thermal and absorption traits of lithium strontium zinc borate glasses: Sensitiveness on Dy3+ doping

Ahmad, Akil; Hashim, Suhairul; Ghoshal, Sib Krishna

doi:10.1016/j.jallcom.2020.156176

Cited by 34 publications

(15 citation statements)

References 41 publications

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“…For this purpose, ΔT 100 °C is expected. The value of ΔT for all samples containing B 2 O 3 ranges from 48 °C to 66 °C which is comparable to that obtained in common fluoride glasses [24,25], tellurite glasses [26,27] and borate glasses [28,29]. TZBTB-2.5 shows the highest ΔT, i.e., ΔT=66 °C.…”

Section: Density and Thermal Propertiessupporting

confidence: 79%

Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Marzuki

Ega

Saraswati

2022

Mater. Res. Express

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New tellurite glasses with composition (in mol%): 60TeO2–(30-x)ZnO–5Bi2O3–5TiO2-xB2O3 (where x = 0, 2.5, 5.0, 7.5 and 10.0) were fabricated using conventional melt quenching method. Compositional dependence of the glasses on their density, thermal, refractive index and optical properties were investigated. X-Ray Diffraction analysis was carried out to confirm the nature of the thus formed glasses. Density, refractive index, and absorption spectra were measured at room temperature from which other glass characteristics such as polaron radius, oxygen packing density, field strength, B3+ interatomic distance, band gap energy, and Urbach tail were determined. Thermal characterisation to determine the change in glass transition temperature, glass crystallisation, melting point, and glass stability was carried out using Differential Scanning Calorimetry. A discussion was made in order to understand the results in terms of the ratio of bridging oxygen to non-bridging oxygen ions (BO/NBO). It was found that the addition of B2O3 results in increasing oxygen packing density, glass transition temperature, BO/NBO ratio and band gap energy, while decreasing density, refractive index, field strength, glass stability and Urbach tail energy. With increasing B2O3 concentration density changed from 5.879 to 5.646 g/cm3, refractive index 1.875 to 1.741, working temperature range (ΔT = 660C) and phonon energy within the range of 736 – 740 cm-1.

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Section: Density and Thermal Propertiessupporting

confidence: 79%

Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Marzuki

Ega

Saraswati

2022

Mater. Res. Express

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“…Therefore, using lithium as a modifier in the borate glass can strengthen chemical stability, modify its chemical as well as physical properties, such as suppressing the high phonon energies, and transform sp 2 BO 3 units into stable sp 3 BO 4 units. Moreover, by generating nonbridging oxygen (NBO) in the structure of borate glass networks, lithium lowers the hygroscopicity of the system and stabilizes it [6,7]. Furthermore, borate glass containing zinc oxide has exhibited enhanced antibacterial properties.…”

Section: Introductionmentioning

confidence: 99%

“…A vital antioxidant role is played by zinc oxide, a biocompatible compound that enhances durability, strength, electron-releasing efficiency, and optical characteristics, making these borate glasses useful for a wide range of applications. In addition, borate glassy matrices can be activated with lanthanide ions, allowing for further tuning of luminescence characteristics, which can make them useful for biomedical imaging [6,[8][9][10]. As one of the elements in the lanthanide group, dysprosium (Dy 3+ ) has exceptional luminescence, and its paramagnetic properties make it particularly useful for biomedical functions in addition to solid-state lighting applications [11].…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, there are certain limitations to using rare earth‐activated borate glass in the manufacturing of LEDs because of its low moisture resistance, large phonon vibrational energy, and binary phases in the glass structure. However, current approaches in glass science have shown that by using alkali metals and metal oxides as modifiers and intermediates in the borate network, borate glass has become competitive for lighting technology [5, 6]. Therefore, using lithium as a modifier in the borate glass can strengthen chemical stability, modify its chemical as well as physical properties, such as suppressing the high phonon energies, and transform sp 2 BO 3 units into stable sp 3 BO 4 units.…”

Section: Introductionmentioning

confidence: 99%

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Noncytotoxic Dy³⁺‐activated glass emits cool white light for near ultraviolet‐based white light‐emitting diodes, visible lasers, and biomedical applications

et al. 2023

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Using the melt quenching technique, a lithium zinc borate glass (LZB) system with trivalent dysprosium ions (Dy3+) was synthesized, and the luminescence and lasing properties of these materials were examined for the generation of white light. Structural investigation through X‐ray diffraction revealed that the prepared glass had an amorphous nature. The optimized glass containing 0.5 Dy3+ had a direct optical band gap of 2.782 eV and an indirect optical band gap of 3.110 eV. A strong excitation band at 386 nm (6H15/2→4I13/2) was recognized in the ultraviolet (UV) light region of its excitation spectrum. Emission bands could be seen in the photoluminescence spectrum at 659, 573, and 480 nm under the 386 nm excitation. These transitions of emission resembled electronic transitions such as (4F9/2→6H11/2), (4F9/2→6H13/2), and (4F9/2→6H15/2). In a pristine glass matrix, the higher intensity ratio of yellow to blue can result in the production of white light. The optimized Dy3+ ion concentration was observed to be 0.5 mol%. In addition, an analysis of lifetime decay was conducted for all synthesized glasses, and their decay trends were systematically investigated. Noticeably, we assessed the photometric parameters and found that they were close to the white light standard. Furthermore, a cytotoxicity study was carried out using lung fibroblast (WI‐38) cell lines for the optimized 0.5Dy3+‐doped LZB glass and it appeared to be noncytotoxic. It is clear from the results that the noncytotoxic LZB glass doped with 0.5 Dy3+ ions could be a suggestive choice for the manufacture of white light‐emitting diodes and lasers using near‐UVs.

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“…Various authors reported the low quantum efficiency of borate glasses and poor emission crosssection due to their greater phonon energy around in the wavenumber range 1300-1500 cm −1 compared to other oxide glasses [8,9]. These hurdles can be minimized by the addition of alkali and alkaline earth metal oxides R2O3 (R = Li, Na, K), and modifier transition metal oxides like CuO to the borate network and thus formed new borate glass network becomes suitable for variety of applications [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Copper doped Strontium Indium‑borate glasses: FTIR, Raman, EPR, Optical and Structural Studies

Narsimha

Chandrasekhar

Shareefuddin

et al. 2022

Preprint

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Indium oxide added strontium borate glasses(30-x)SrO–69B2O3–1CuO: xIn2O3with five different values of x (from 0.5 to 2.5 mol%) were synthesized using the conventional melt quenching process. The amorphous nature of these glass samples was confirmed from X-Ray diffraction spectra. Physical properties like density, molar volume, dielectric constant etc. have been reported for various concentrations of In2O3. Spectroscopic studies, namely, optical absorption, EPR were undertaken to comprehend the impact of In2O3and CuO dopants on strontium-borate structure. Urbach energy and optical band gap (Eopt) values were estimated at room temperature. The spin-Hamiltonian parameters of Cu2+ ions have revealed gǁǁ> g┴>ge and Aǁǁ> A┴ indicating the Cu2+spin probe ground state as dx2-y2(2B1g state) and the site symmetry around Cu2+ is tetragonally distorted octahedral. Fourier transform infrared spectra recorded in the region from 400-1600 cm-1 confirmed the occurrence of conventional BO3, BO4units along with In3+O6 groups. The Raman spectra of the glass samples were registered between 200 cm-1 and 600 cm-1 exhibited various spectral bands.

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Physical, thermal and absorption traits of lithium strontium zinc borate glasses: Sensitiveness on Dy3+ doping

Cited by 34 publications

References 41 publications

Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Noncytotoxic Dy³⁺‐activated glass emits cool white light for near ultraviolet‐based white light‐emitting diodes, visible lasers, and biomedical applications

Copper doped Strontium Indium‑borate glasses: FTIR, Raman, EPR, Optical and Structural Studies

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Physical, thermal and absorption traits of lithium strontium zinc borate glasses: Sensitiveness on Dy3+ doping

Cited by 34 publications

References 41 publications

Effect of B2O3 addition on thermal and optical properties of TeO2–ZnO–Bi2O3–TiO2 glasses

Effect of B2O3 addition on thermal and optical properties of TeO2–ZnO–Bi2O3–TiO2 glasses

Noncytotoxic Dy3+‐activated glass emits cool white light for near ultraviolet‐based white light‐emitting diodes, visible lasers, and biomedical applications

Copper doped Strontium Indium‑borate glasses: FTIR, Raman, EPR, Optical and Structural Studies

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Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Noncytotoxic Dy³⁺‐activated glass emits cool white light for near ultraviolet‐based white light‐emitting diodes, visible lasers, and biomedical applications