Effect of Ho3+ concentration on the luminescent and thermal stability of tellurite glasses

Leal, J.J.; Rodríguez, E.; Nava-Dino, C.G.; Maldonado-Orozco, M. C.; Gaxiola, Fernando; Narro-García, R.

doi:10.1016/j.materresbull.2021.111483

Cited by 12 publications

(4 citation statements)

References 26 publications

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“…Furthermore, for all of the SrF 2 :Ho 3+ NPs, the values of rise times decreased with growing concentration of Ho 3+ ions in the prepared samples, while the values of decay times initially increased, achieved a maximum for the sample characterized by the most intense luminescence, then rapidly decreased. This dependence is usually found for the materials doped with Ho 3+ ions [28] and probably results from the increased contribution of the non-radiative processes related to the concentration quenching [56].…”

Section: Spectroscopic Propertiesmentioning

confidence: 75%

“…The similar trend of the dependence of the n coefficient on the concentration of doping Ln 3+ ions in UC materials is explained by the fact that as the concentration of Ln 3+ ions increases, the distance between them decreases, and this enhances the efficiency of energy transfer, which has a contribution to increasing the overall conversion efficiency [16,58,59]. On the other hand, the increase in the content of the Ho 3+ ions in the prepared samples caused the decrease in the luminescence rise and decay time, which is connected with the concentration quenching effect, reducing the UC efficiency [56]. The observed increase of n coefficient may be also a consequence of higher quenching/cross-relaxation rates resulting in the need for more rapid absorption/ energy transfer of another photon [60].…”

Section: Spectroscopic Propertiesmentioning

confidence: 99%

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NIR-to-NIR and NIR-to-Vis up-conversion of SrF₂:Ho³⁺ nanoparticles under 1156 nm excitation

Ryszczyńska

Grzyb

2022

Methods Appl. Fluoresc.

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Recently, the up-converting (UC) materials, containing lanthanide (Ln3+) ions have attracted considerable attention because of the multitude of their potential applications. The most frequently investigated are UC systems based on the absorption of near-infrared (NIR) radiation by Yb3+ ions at around 975-980 nm and emission of co-dopants, usually Ho3+, Er3+ or Tm3+ ions. UC can be observed also upon excitation with irradiation with a wavelength different than 975-980 nm. The most often studied systems capable of UC without the use of Yb3+ ion are those based on the properties of Er3+ ions, which show luminescence resulting from the excitation at 808 or 1532 nm. However, also other Ln3+ ions are worth attention. Herein, we focus on the investigation of the UC phenomenon in the materials doped with Ho3+ ions, which reveal unique optical properties upon the NIR irradiation. The SrF2 NPs doped with Ho3+ ions in concentrations from 4.9% to 22.5%, were synthesized by using the hydrothermal method. The structural and optical characteristics of the obtained SrF2:Ho3+ NPs are presented. The prepared samples had crystalline structure, were built of NPs of round shapes and their sizes ranged from 16.4 to 82.3 nm. The NPs formed stable colloids in water. Under 1156 nm excitation, SrF2:Ho3+ NPs showed intense UC emission, wherein the brightest luminescence was recorded for the SrF2:10.0%Ho3+ compound. The analysis of the measured lifetime profiles and dependencies of the integral luminescence intensities on the laser energy allowed proposing the mechanism, responsible for the observed UC emission. It is worth mentioning that the described SrF2:Ho3+ samples are one of the first materials for which the UC luminescence induced by 1156 nm excitation was obtained.

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Section: Spectroscopic Propertiesmentioning

confidence: 75%

Section: Spectroscopic Propertiesmentioning

confidence: 99%

NIR-to-NIR and NIR-to-Vis up-conversion of SrF₂:Ho³⁺ nanoparticles under 1156 nm excitation

Ryszczyńska

Grzyb

2022

Methods Appl. Fluoresc.

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“…Overall, these results suggest that Thulium doping has a notable impact on the thermal properties of TZBN glasses. The glass stability (∆T) is a measure of the thermal stability of a glass and is defined as the temperature difference between the onset of crystallization and the glass transition temperature (Tg) [29]. The higher of the ∆T, the more thermally stable glass [30,31].…”

Section: Resultsmentioning

confidence: 99%

Thermal Stability of ZnO/Tm<sub>2</sub>O<sub>3</sub> Substitution on Tellurite-Zinc-Bismuth-Sodium (TZBN) Glasses

Marzuki,

Sutomo,

Purwanto

et al. 2024

MSF

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Tm2O3 doped tellurite-zinc-bismuth-sodium (TZBN) glass samples with varying compositions were prepared through melt quenching technique. The composition of these glass was 60 TeO2 - (30-x) ZnO - 5 Bi2O3 - 5 Na2O - x Tm2O3 with (x = 0.5; 1.0; 1.5; 2.0 and 2.5 mol%). We reported the result of a systematic study of the thermal properties of these glass by using differential thermal analysis (DTA). The thermal characteristics of these glass (glass transition, Tg, crystallization, Tc, and melting, Tm) increased significantly with Tm2O3 content and the glasses were more thermally stable (greater ΔT=Tc-Tg). The glass transition value slightly increased from 314 to 323 °C otherwise thermal stability ΔT changed from 112 to 131°C. The ratio of Tg/Tm values for TZBN doped Thulium glasses were about 0.558 to 0.589, indicated that these glasses possess good thermal stability. The Hruby parameter (Kg) with Tm3+ doped in this study improved glass-forming ability, which is desirable for various applications such as optical fibers drawing and sensors.

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“…Other appealing properties like easy fiberization, reasonably wide transmission window with extremely low intrinsic loss and high optical damage threshold makes tellurite glasses even more dominant among other oxide glasses. [6][7][8][9][10][11][12][13][14][15] Bismuth oxide is one important class of material that exhibit higher refractive index, lower phonon energy and larger third order non-linearity when formed as suitable glass. These are also conditional glass formers like tellurium oxide and hence a suitable combination of glass formers and modifiers will yield highly stable, optically active glasses.…”

mentioning

confidence: 99%

Review—Recent Advances in Bismuth Tellurite Glasses for Photonic and Radiation Shielding Applications

Blessy Kamalam,

Manikandan

2023

ECS J. Solid State Sci. Technol.

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The inherent properties of heavy metal oxide glasses have led to their widespread applications in various domains including lasers, optical fibers, optoelectronics, and radiation shielding materials. Tellurium oxide and bismuth oxides are conditional glass forming heavy metal oxides which, when combined, suitably yield significant improvement in the whole system. Lower phonon energy of tellurite helps in aiding broader transmission and lasing properties, while the ability of bismuth ions to reside in various valence states aids in incorporation of optically active rare earth ions in these glasses. The near infrared emission characteristic of bismuth ions could be improved by co-doping with rare earth ions to improve the emission and consequently their applications as photonic devices. Higher density of these oxides helps in increasing the radiation shielding ability, thereby making them suitable replacement materials for lead based toxic compounds.

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Effect of Ho3+ concentration on the luminescent and thermal stability of tellurite glasses

Cited by 12 publications

References 26 publications

NIR-to-NIR and NIR-to-Vis up-conversion of SrF₂:Ho³⁺ nanoparticles under 1156 nm excitation

NIR-to-NIR and NIR-to-Vis up-conversion of SrF₂:Ho³⁺ nanoparticles under 1156 nm excitation

Thermal Stability of ZnO/Tm<sub>2</sub>O<sub>3</sub> Substitution on Tellurite-Zinc-Bismuth-Sodium (TZBN) Glasses

Review—Recent Advances in Bismuth Tellurite Glasses for Photonic and Radiation Shielding Applications

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Effect of Ho3+ concentration on the luminescent and thermal stability of tellurite glasses

Cited by 12 publications

References 26 publications

NIR-to-NIR and NIR-to-Vis up-conversion of SrF2:Ho3+ nanoparticles under 1156 nm excitation

NIR-to-NIR and NIR-to-Vis up-conversion of SrF2:Ho3+ nanoparticles under 1156 nm excitation

Thermal Stability of ZnO/Tm<sub>2</sub>O<sub>3</sub> Substitution on Tellurite-Zinc-Bismuth-Sodium (TZBN) Glasses

Review—Recent Advances in Bismuth Tellurite Glasses for Photonic and Radiation Shielding Applications

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NIR-to-NIR and NIR-to-Vis up-conversion of SrF₂:Ho³⁺ nanoparticles under 1156 nm excitation

NIR-to-NIR and NIR-to-Vis up-conversion of SrF₂:Ho³⁺ nanoparticles under 1156 nm excitation