Thermal characteristics and crystallization behavior of zinc borosilicate glasses containing Nb2O5

Monteiro, Regina da Conceição Corredeira; Lopes, Andreia A. S.; Lima, Maria Luísa; Veiga, João Pedro

doi:10.1016/j.jnoncrysol.2018.03.054

Cited by 21 publications

(2 citation statements)

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“…Prior works indicated that various rare earth (Tb 3+ , Sm 3+ , Pr 3+ , and Ce 3+ )-and transition metals (Mn 2+ , Cu 2+ , and Co 2+ )-activated zinc borosilicate glasses have been studied to investigate luminescence properties [15][16][17][18][19][20][21][22]. Furthermore, the effect of adding transition metals (Nb, Mn, V, and Co) on the crystallization behavior of zinc borosilicate glasses has been examined [18,[22][23][24]. However, in those studies, the effect of substituting zinc oxide with silicon dioxide and boron oxide on the luminescence behavior of zinc borosilicate glasses was not investigated in detail.…”

Section: Introductionmentioning

confidence: 99%

Effect of ZnO on Luminescence Performance of Terbium-Activated Zinc Borosilicate Glasses

Dayioglugil,

Solak

2024

Materials

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In this study, terbium-doped ZnO-SiO2-B2O3-Na2O glasses were fabricated with the conventional melt-quenching method. The effect of altering the concentration of the host matrix on luminescence performance was investigated in terms of different ZnO/B2O3 and ZnO/SiO2 ratios. FT-IR results indicate that bridging oxygens (Bos) were converted to non-bridging oxygens (NBOs) with increments of ZnO. Furthermore, the emission intensity and luminescence lifetime of samples were influenced by the amount of ZnO; this was proven with photoluminescence spectra results. The maximum emission intensity was observed at a 1.1 ZnO/B2O3 ratio and a 0.8 ZnO/SiO2 ratio; however, the highest luminescence lifetime was observed at a 1.1 ZnO/SiO2 ratio. The emission intensity and luminescence lifetime of glass samples were improved by heat treatment as a result of the formation of willemite and zinc oxide phases. An increase in the ZnO/SiO2 ratio facilitated the formation of willemite and zinc oxide phases; therefore, crystallinity was directly related to the luminescence behavior of glass samples.

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Section: Introductionmentioning

confidence: 99%

Effect of ZnO on Luminescence Performance of Terbium-Activated Zinc Borosilicate Glasses

Dayioglugil,

Solak

2024

Materials

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“…Such strong long-range interaction lowers the concentration of non-bridging oxygens to some extent and increase the corrosion resistance of the lithium phosphate glasses. Nb 2 O 5 participates in the glass network with NbO 4 (with Nb-O bond length1.823 Å) and also with NbO 6 structural units (in which Nb-O bond length1.977 Å) [3]. Further, Nb 2 O 5 mixed glasses are particularly useful for photocatalysts, as luminescent materials etc., and are also known as good dielectric materials [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Influence of silver ion concentration on dielectric characteristics of Li2O-Nb2O5-P2O5 glasses

Prasad

Pavić

Moguš‐Milanković

et al. 2019

Journal of Alloys and Compounds

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In this work we have studied the dielectric properties of Li 2 O-Nb 2 O 5 -P 2 O 5 : Ag 2 O glasses as a function of Ag 2 O concentration. Auxiliary studies viz., optical absorption, photoluminescence (PL)and IR spectra have also been performed on these glasses. IR spectral studies have indicated that the host glass network doped with 1.0 mol% of Ag 2 O is highly polymerized. Optical absorption and PL studies have clearly exhibited absorption and emission bands due to surface plasmon resonance (SPR). From these studies the presence of Ag 0 -Ag + clusters is established in the glass network and the concentration of such clusters is found to be the highest in the glass doped with 1.0 mol% of Ag 2 O. Finally, we have performed extensive studies on dielectric properties viz., dielectric constant, loss, electric moduli, impedance spectra and a.c. conductivity over broad ranges of frequency (0.01 Hz to 1 MHz) and temperature (303 to 513 K). The glasses doped with higher content of Ag 2 O exhibited higher values of dielectric constant especially at lower frequencies and higher temperatures.The larger contribution from space charge polarization is predicted to be responsible for such higher values. In the glasses doped with low contents of Ag 2 O (< 1.0 mol%) the polaron conductivity (due to the polaronic transfer between Ag 0 and Ag + ions) seemed to be dominant, whereas in the glasses containing more than 1.0 mol% of Ag 2 O, the ionic conduction (due to the diffusion of Ag + and Li + ions) appeared to be prevailed. The impedance diagrams drawn between Z′ and Z″ have further supported the above-mentioned conclusions. From the overall analysis of the results of dielectric properties (including a.c. conductivity ) with the aid of experimental results on spectroscopic studies, it is concluded that the glass containing more than 1.0 mol% of Ag 2 O exhibited predominantly ionic conductivity and hence such glasses may be useful as electrolytes for ionic conducting batteries.

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Luminescence Characteristics and Energy Transfer Dynamics of Rare-Earth Ion Co-activated Borosilicate Glasses for Solid-State Lighting Applications

Jose

Krishnapriya

Biju

2023

Progress in Optical Science and Photonics

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Thermal characteristics and crystallization behavior of zinc borosilicate glasses containing Nb2O5

Cited by 21 publications

References 40 publications

Effect of ZnO on Luminescence Performance of Terbium-Activated Zinc Borosilicate Glasses

Effect of ZnO on Luminescence Performance of Terbium-Activated Zinc Borosilicate Glasses

Influence of silver ion concentration on dielectric characteristics of Li2O-Nb2O5-P2O5 glasses

Luminescence Characteristics and Energy Transfer Dynamics of Rare-Earth Ion Co-activated Borosilicate Glasses for Solid-State Lighting Applications

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