Visible and mid-infrared spectral emissions and radiative rates calculations of Tm3+ doped BBLC glass

El-Maaref, A.A.; Wahab, E. A. Abdel; Shaaban, Kh. S.; Abdelawwad, Mohamed; Koubisy, M. S. I.; Börcsök, Josef; Yousef, El Sayed

doi:10.1016/j.saa.2020.118774

Cited by 61 publications

(16 citation statements)

References 46 publications

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“…In contrast, the incorporation of transitional or rare earth oxides into sodium titanium silicate glass structures are enhanced optical, electrical, thermal, mechanical and radiation protection characteristics [22][23][24][25]. Glasses containing rare-earth ions have attracted a great deal of interest because of their benefits [26][27][28][29][30][31]. Intermediate oxides such as Y2O3 can act either as a glass modifier or former, depending on their concentration in the glass matrix.…”

mentioning

confidence: 99%

Optical Properties of SiO2 – TiO2 – La2O3 – Na2O – Y2O3 Glasses and A Novel Process of Preparing the Parent Glass-Ceramics

El‐Rehim

Wahab

Halaka

et al. 2021

Silicon

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Quaternary glasses with the composition 50SiO2-25TiO2-5La2O3-(20-x) Na2O-xY2O3 where : (0 ≤ ≥ 10) were synthesized using the melt-quench technique. XRD examined the nature of prepared glasses. UV-spectroscopic of investigated glass system studied at room temperature. Both optical bandgap and refractive index of the present glass have been increased. The polarizability and basicity were determined. Thermal parameter values increased as Y2O3 increased. Under controlling heat, the glass-ceramic were prepared and confirmed using XRD. Glass-ceramics are examined using SEM to evaluate a microstructure. Ultrasonic velocities and elastic-moduli of glass-ceramic samples are increased because of the increase in internal energy. The role of Y2O3 modifier in the glass system is clearly demonstrated. Y2O3 also works as an excellent nucleating agent that can induce crystallizations, supporting in the creation of the sub-phase of glass-ceramics.

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mentioning

confidence: 99%

Optical Properties of SiO2 – TiO2 – La2O3 – Na2O – Y2O3 Glasses and A Novel Process of Preparing the Parent Glass-Ceramics

El‐Rehim

Wahab

Halaka

et al. 2021

Silicon

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“…It has been reported that spectral UV-absorption is increasingly absorbed. Therefore, La2O3 is accountable for the slight growth of BO [24][25][26][27][28][29][30][31][32][33][34][35][36]. Absorption coefficient of the glasses exemplifies Fig.…”

Section: Optical Characteristicsmentioning

confidence: 92%

Optical, thermal and radiation shielding properties of B2O3–NaF–PbO–BaO–La2O3 glasses

Shaaban

Alomairy

Al-Buriahi

2021

J Mater Sci: Mater Electron

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The techniques of melt-quenching were used to generate 53B2O3 -2NaF -27PbO -(20 − )BaO -La2O3 (0 ≤ ≥ 15) . XRD patterns have established the amorphous character of glass samples. There is clear evidence of the role of La2O3 modifier in the glass network. The thermal characteristics were identified to increase with an increase in La2O3 content. Increasing La2O3 increases the linear and non-linear optical bandgap energy and the Urbach energy. By adding La2O3 to the glass samples, the refractive index, molar polarizability, polarizability, and optical basicity are increased. Theoretically, the bulk modulus and the glass transition temperature increase because of the increase in bond strength. The number of bonds per unit increased with the increase in La2O3 content because of the modifier character of La2O3 in the glass samples. Multiple optical parameters ( ∞), ( o),(1) , ( 3) ) and ( 2 ) as a function of linear and non-linear were obtained. The extent of shielding in this article was examined with the increment in La2O3 at the expense of BaO. The results correspond with similar studies conducted previously.

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“…This observable fact is called luminescence quenching. With increasing concentration of Sm2O3 the glass matrix becomes crowded by Sm 3+ ions this reduces the Internuclear distance (ri) between Sm 3+ -Sm 3+ ions also the distance between donor and acceptor centers decreases significantly [5] . Consequently, the excitation energy could be transferred from Sm 3+ ion to another ion by the interaction between two active ions so the intensity of luminescence decreases [9,31] .…”

Section: Od(λ)mentioning

confidence: 99%

“…The increase of B2O3 content enhances chemical resistance and improves transparency. Since borate glasses own high phonon energies which may hold back the efficiency of their luminescence during various relaxations [5] The addition of silica to borate glass reduces the thermal expansion coefficient and enhances the melting point and the working point. The acid stability of the glass decreases as the silica concentration decreases.…”

Section: Introductionmentioning

confidence: 99%

“…[6] Alkali Metal oxide has an important role in the crystallization process, combining two metal oxide enhanced the resistance toward unwanted crystallization. [7] Therefore, alkaline earth cations can be added to the borate glass to upgrade their optical properties, impact the network connectivity, arranging of modifier cations and modify chain bonding in glasses by replacing the bridging oxygen with non-bridging oxygen [5] . Li + ions improve the acid-resistance of glass by forming bonds with glass networks [7] .…”

Section: Introductionmentioning

confidence: 99%

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Spectroscopic Properties of Alumina Borosilicate Glassesw Alkaline Oxides Doped with Sm2O3 for Display Laser Emission

Elkhoshkhany

Marzouk

Sherbiny

et al. 2021

Preprint

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This research investigates the influence of the concentration of Sm+ 3 ions on the features of a new borosilicate glass system with the composition 50B2O3– 14SiO2- 20Li2O– 15Na2O– 1.0Al2O3-x(Sm2O3), where x = 100, 200, 300, 400, and 500 ppm. The glasses are characterized by XRD, FTIR, UV- Vis- NIR, and photoluminescence spectra. The XRD results proved that all prepared glass has amorphous nature. Moreover, it was found that the value of density, ρ, and refractive index,n, increase with increasing of Sm+ 3 content. Otherwise, the value of molar volume, optical energy gap, and boron-boron distance decrease by increasing sm+ 3 concentration. The structure of glasses studied was investigated by computing \(Internuclear \left({r}_{i}\right)\), Polaron radius \(\left({r}_{p}\right)\), field strength \(\left(F\right)\) and the deconvolution of FTIR spectra. Judd-Ofelt theory applied to clarify the structural changes and nature of the bonds of prepared glasses. Moreover, A spectroscopic quality factor, the branching ratio (βr), and lifetime (τ) are calculated via the parameters of Judd-Ofelt. The color chromaticity of the present glasses evidenced that the emission was in the white-reddish orange region under 402nm excitation depended on the concentration of Sm3+ ions incorporated into the host glasses. From photoluminescence emission, stimulated emission cross-section, and CIE chromaticity leads to these glasses are promising for light-emitting diode (LED) as; laser material in a wide range.

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Visible and mid-infrared spectral emissions and radiative rates calculations of Tm3+ doped BBLC glass

Cited by 61 publications

References 46 publications

Optical Properties of SiO2 – TiO2 – La2O3 – Na2O – Y2O3 Glasses and A Novel Process of Preparing the Parent Glass-Ceramics

Optical Properties of SiO2 – TiO2 – La2O3 – Na2O – Y2O3 Glasses and A Novel Process of Preparing the Parent Glass-Ceramics

Optical, thermal and radiation shielding properties of B2O3–NaF–PbO–BaO–La2O3 glasses

Spectroscopic Properties of Alumina Borosilicate Glassesw Alkaline Oxides Doped with Sm2O3 for Display Laser Emission

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