Tunable greenish to reddish luminescence and two-way energy transfer in Ho3+ and Pr3+ doped TeO2:ZnO glass

Trindade, C.M.; Alves, R.T.; Silva, A.C.A.; Dantas, Noélio O.; Gouveia‐Neto, A. S.

doi:10.1016/j.optmat.2019.109574

Cited by 19 publications

(4 citation statements)

References 22 publications

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“…The obtained values of the Ω i (I = 2,4,6) parameters follow the same pattern as those observed for different Ho 3+ -doped tellurite glasses and follow the same sequence, namely Ω 2 > Ω 4 > Ω 6 [29]. On the other hand, the sequence is different with Tellurite glasses doped with Pr +3 [24,28].…”

Section: Absorption Spectra and Judd-ofelt Analysissupporting

confidence: 79%

“…For completeness' sake, we have also extracted the Ho 3+:5 I 7 absorption band, and both bands are shown in Figure 2. As seen in Figure 1, the spectra of samples TPr and TPrHo show the existence of several single absorption bands attributed to transitions from the ground states of both ions, Pr 3+:3 H4 and Ho 3+:5 I8, to subsequent excited states, as indicated elsewhere [29].…”

Section: Absorption Spectra and Judd-ofelt Analysismentioning

confidence: 55%

“…The ET efficiency (η) from Pr 3+ to Ho 3+ ions can be estimated using the following equation, calculated as [29] η = 1 − τ Pr−Ho τ Pr (7) where τ Pr-Ho and τ Pr are the effective lifetimes with and without Ho 3+ co-doping, respectively, for the same concentration of Pr 3+ ions. Using the value τ Pr = 3.92 µs, corresponding to N Pr =3.16×10 20 cm −3 , we have obtained the ET efficiency η = 29% that can be compared with the values 19 and 32.3% found for tellurite glasses doped with 1 mol% of Pr 3+ ions, and codoped with 0.5 and 1 mol% of Ho 3+ ions, respectively [28].…”

Section: Sample Codementioning

confidence: 99%

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Enhanced Emission of Tellurite Glass Doped with Pr3+/Ho3+ and Their Applications

et al. 2023

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The shielding and spectroscopic properties of Pr+3 and Pr3+/Ho3+-codoped tellurite glass were investigated. The intensity parameters (Ω2 = 3.24-, Ω4 = 1.64-, Ω6 = 1.10 × 10−20 cm2) as well as the radiative lifetimes of 3F4 + 5S2 and 5I6 excited states of Ho3+ ions were equal to 301 μs and 3.0 μs, respectively. The former value appears to be much higher than that obtained from the lifetime measurement, indicating the presence of various energy transfer processes. The NIR spectrum of Pr3+/Ho3+-co-doped tellurite glass is dominated by strong Ho3+: 5I6 emission at around 1200 nm, being the result of the energy transfer from Pr3+ to Ho3+ ions. The shielding effectiveness of the prepared glasses showed good performance against high-energy photons. These findings suggest that the prepared glasses could be used in laser technology such as photodynamic therapy (PDT) treatment procedures and as shielding for radiation protection.

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Section: Absorption Spectra and Judd-ofelt Analysissupporting

confidence: 79%

Section: Absorption Spectra and Judd-ofelt Analysismentioning

confidence: 55%

Section: Sample Codementioning

confidence: 99%

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Enhanced Emission of Tellurite Glass Doped with Pr3+/Ho3+ and Their Applications

et al. 2023

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“…The presence of trivalent cations (dopants) results in a more stable (less hygroscopic) glass structure in all of the glass samples. However, the solubility limit related to the overall concentration of trivalent ions in phosphate glasses seems to be round 50 mol% [130]. The tellurite glasses doped with praseodymium ions Pr 3+ exhibit reddish-orange luminescence under blue wavelength excitation [131].…”

Section: Discussion Of the Resultsmentioning

confidence: 99%

Ceramics, Glass and Glass-Ceramics for Personal Radiation Detectors

2021

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Different types of ceramics and glass have been extensively investigated due to their application in brachytherapy, radiotherapy, nuclear medicine diagnosis, radioisotope power systems, radiation processing of food, geological and archaeological dating methods. This review collects the newest experimental results on the thermoluminescent (TL) properties of crystalline and glassy materials. The comparison of the physico-chemical properties shows that glassy materials could be a promising alternative for dosimetry purposes. Furthermore, the controlled process of crystallization can enhance the thermoluminescent properties of glasses. On the other hand, the article presents information on the ranges of the linear response to the dose of ionizing radiation and on the temperature positions of the thermoluminescent peaks depending on the doping concentration with rare-earth elements for crystalline and glassy materials. Additionally, the stability of dosimetric information storage (fading) and the optimal concentration of admixtures that cause the highest thermoluminescent response for a given type of the material are characterized. The influence of modifiers addition, i.e., rare-earth elements on the spectral properties of borate and phosphate glasses is described.

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Effect of titania nano composite on structural and optical properties of Ho3+ doped silica glasses for green laser applications

Dawngliana,

Rai

2024

Appl. Phys. A

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Tunable greenish to reddish luminescence and two-way energy transfer in Ho3+ and Pr3+ doped TeO2:ZnO glass

Cited by 19 publications

References 22 publications

Enhanced Emission of Tellurite Glass Doped with Pr3+/Ho3+ and Their Applications

Enhanced Emission of Tellurite Glass Doped with Pr3+/Ho3+ and Their Applications

Ceramics, Glass and Glass-Ceramics for Personal Radiation Detectors

Effect of titania nano composite on structural and optical properties of Ho3+ doped silica glasses for green laser applications

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