Photoluminescence and thermal properties of trivalent ion-doped lanthanum tellurite anti-glass and glass composite samples

Kaur, Rajinder; Khanna, Atul

doi:10.1016/j.jlumin.2020.117375

Cited by 16 publications

(5 citation statements)

References 47 publications

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“…The Raman spectra of Eu 3+ -doped glasses in the 1100–200 cm −1 range were presented in Figure 6 . The obtained results are very similar to those published in [ 27 , 39 ]. All Raman spectra have identical features: four-banded maximums at around 320, 460, 800, and 850 cm −1 , respectively.…”

Section: Resultssupporting

confidence: 91%

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Investigation of the TeO2/GeO2 Ratio on the Spectroscopic Properties of Eu3+-Doped Oxide Glasses for Optical Fiber Application

et al. 2021

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This study presented an analysis of the TeO2/GeO2 molar ratio in an oxide glass system. A family of melt-quenched glasses with the range of 0–35 mol% of GeO2 has been characterized by using DSC, Raman, MIR, refractive index, PLE, PL spectra, and time-resolved spectral measurements. The increase in the content of germanium oxide caused an increase in the transition temperature but a decrease in the refractive index. The photoluminescence spectra of europium ions were examined under the excitation of 465 nm, corresponding to 7F0 → 5D2 transition. The PSB (phonon sidebands) analysis was carried out to determine the phonon energy of the glass hosts. It was reported that the red (5D0 → 7F2) to orange (5D0 → 7F1) fluorescence intensity ratio for Eu3+ ions decreased from 4.49 (Te0Ge) to 3.33 (Te15Ge) and showed a constant increase from 4.58 (Te20Ge) to 4.88 (Te35Ge). These optical features were explained in structural studies, especially changes in the coordination of [4]Ge to [6]Ge. The most extended lifetime was reported for the Eu3+ doped glass with the highest content of GeO2. This glass was successfully used for the drawing of optical fiber.

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Section: Resultssupporting

confidence: 91%

“…In the range of 2θ from 20° to 40°, a broad diffraction hump (inset in Figure 1 —left side—diffraction patterns) might be observed. This is characteristic of amorphous materials [ 39 ]. The phase separation was not observed in all glasses (inset in Figure 1 —right side—SEM photo for Te35Ge glass).…”

Section: Resultsmentioning

confidence: 99%

Investigation of the TeO2/GeO2 Ratio on the Spectroscopic Properties of Eu3+-Doped Oxide Glasses for Optical Fiber Application

et al. 2021

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“…Recently Kaur et al , 44 have reported in situ crystallization in Sm, Eu, Gd, Dy, Er, and Yb singly doped 5La 2 O 3 –95TeO 2 glasses using optical microscopy. The precipitation of micron sized lanthanum tellurite “ anti-glass ” with a crystallite size in the range of 20–1500 μm, exist in different shapes (triangular, rectangular, spherical or flower like) corresponding to different RE 3+ ions in the as-quenched glasses.…”

Section: Resultsmentioning

confidence: 99%

The effect of rare earth (RE³⁺) ionic radii on transparent lanthanide-tellurite glass-ceramics: correlation between ‘hole-formalism’ and crystallization

et al. 2023

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“…Under the viscous sintering conditions used to create ternary GeO 2 –TiO 2 –SiO 2 glasses, the high mobility of GeO 2 , [ 8 ] in combination with higher configurational entropy, [ 12 ] may contribute to haze suppression relative to similar Ti content in TiO 2 –SiO 2 binary glasses by improving compositional homogeneity and thereby reducing scattering interfaces between high and low index domains. During the sintering process, it is expected that GeO 2 ( T m = 1115 °C) will be more mobile in SiO 2 ( T m = 1715 °C) than TiO 2 ( T m = 1843 °C) at a sintering temperature T of 1100 °C because larger T / T m would lead to faster diffusion.…”

Section: Resultsmentioning

confidence: 99%

Refractive Index and Abbe Number Tuning via 3D Printable Optical Quality Silica–Titania–Germania Glasses

Sasan

Yee

et al. 2022

Advanced Photonics Research

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The development of optical quality GeO2–TiO2–SiO2 glasses compatible with direct ink writing (DIW) 3D printing is reported in this study. Colloidal GeO2 and TiO2–SiO2 core–shell feedstocks are prepared by a sol–gel method and converted to printable inks for DIW. Printed inks are subsequently densified to glass using heat treatment at temperatures up to 1100 °C in air. A series of print‐compatible glass compositions are prepared, yielding transparent glass with the highest refractive index n = 1.576. Herein, it is shown that more TiO2 can be incorporated into the glass without haziness or scattering through the addition of GeO2. The mechanisms for this are discussed, and it is shown that crystallization persists in these glasses despite the lack of visible light scattering. Finally, the combination of both TiO2 and GeO2 into a ternary glass also is used to independently tune the dispersion properties of the glass, as demonstrated by measured refractive indices and Abbe numbers, which has potential implications for 3D‐printed optics.

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Photoluminescence and thermal properties of trivalent ion-doped lanthanum tellurite anti-glass and glass composite samples

Cited by 16 publications

References 47 publications

Investigation of the TeO2/GeO2 Ratio on the Spectroscopic Properties of Eu3+-Doped Oxide Glasses for Optical Fiber Application

Investigation of the TeO2/GeO2 Ratio on the Spectroscopic Properties of Eu3+-Doped Oxide Glasses for Optical Fiber Application

The effect of rare earth (RE³⁺) ionic radii on transparent lanthanide-tellurite glass-ceramics: correlation between ‘hole-formalism’ and crystallization

Refractive Index and Abbe Number Tuning via 3D Printable Optical Quality Silica–Titania–Germania Glasses

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Photoluminescence and thermal properties of trivalent ion-doped lanthanum tellurite anti-glass and glass composite samples

Cited by 16 publications

References 47 publications

Investigation of the TeO2/GeO2 Ratio on the Spectroscopic Properties of Eu3+-Doped Oxide Glasses for Optical Fiber Application

Investigation of the TeO2/GeO2 Ratio on the Spectroscopic Properties of Eu3+-Doped Oxide Glasses for Optical Fiber Application

The effect of rare earth (RE3+) ionic radii on transparent lanthanide-tellurite glass-ceramics: correlation between ‘hole-formalism’ and crystallization

Refractive Index and Abbe Number Tuning via 3D Printable Optical Quality Silica–Titania–Germania Glasses

Contact Info

Product

Resources

About

The effect of rare earth (RE³⁺) ionic radii on transparent lanthanide-tellurite glass-ceramics: correlation between ‘hole-formalism’ and crystallization