Novel Er3+ doped heavy metals-oxyfluorophosphate glass as a blue emitter

Saeed, Aly; Sobaih, S.; Abu-raia, W.; Abdelghany, A. M.; Heikal, Sh.

doi:10.1007/s11082-021-03171-9

Cited by 17 publications

(3 citation statements)

References 27 publications

(41 reference statements)

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“…The characteristic peak of the glass transition temperature is observed in the region from 347 up to 357 °C, while a strong exothermic peak characterizing the crystallization appeared in the region from 463 up to 475 °C. Figure 5 b shows the change in the glass transition temperature , onset crystallization temperature , and thermal stability 19 with growing nickel ions concentrations. The augmentation of the glass transition temperature is attributed to the tight packing structure caused by the combination of Ni ions in the blended oxyflourophosphate network.…”

Section: Resultsmentioning

confidence: 99%

Ni ions doped oxyflourophosphate glass as a triple ultraviolet–visible–near infrared broad bandpass optical filter

Abu-raia¹,

Aloraini

El-Khateeb³

et al. 2022

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Research and development R&D about new materials that can be used as an optical filter, shortpass, bandpass, and longpass is still ongoing. So, in this context, the 50P2O5–20ZnF2–15MgF2–15PbF2 doped different concentrations of NiO ranging from 0 up to 4 mol% as a bandpass filter was prepared using the conventional melt annealing method. The formation of the amorphous essence was observed in the X-ray diffraction patterns. The role of Ni ions in the produced glass network was studied by density and Fourier Transform Infrared FTIR spectroscopy results, which showed that the Ni ions play a network modifier role. Thermal analysis results showed high thermal stability for the produced glasses. Electron paramagnetic resonance EPR spectra results clarified that the Ni3+ ions occupy an elongated octahedral $$\left( {g_{ \bot } > g_{\parallel } \approx 2} \right)$$ g ⊥ > g ‖ ≈ 2 . The measurements of AC conductivity, dielectric constant, and electric modulus were studied at different temperatures and frequencies. The ionic conduction dominates the conductivity at high temperatures, while the electronic dominates at low temperatures. The appearance of Ni3+ (confirmed by ESR) and Ni2+ were observed in the optical absorption spectra, also it was found that both of them occupy both tetrahedral and octahedral sites. Three distinguished bands in the UV (centered at 354 nm), visible (centered at 620 nm), and NIR (centered at 1074 nm) regions appeared in the optical transmittance spectra, indicating the defining characteristic of the bandpass filter.

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Section: Resultsmentioning

confidence: 99%

Ni ions doped oxyflourophosphate glass as a triple ultraviolet–visible–near infrared broad bandpass optical filter

Abu-raia¹,

Aloraini

El-Khateeb³

et al. 2022

Sci Rep

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“…Density and density-based parameters effectively explore the impact of the additives on the physical properties of glass networks, so the density was measured using Archimedes' principle according to Eq. 1 3 , 9 , 23 , 24 then density-based parameters (molar volume , mean boron-boron separation , oxygen packing density , and packing density ) were deduced using the Eqs. 2 3 , 9 , 25 – 27 , 3 12 , 28 , 4 12 , 26 , and 5 26 .…”

Section: Experimental and Theoretical Aspectsmentioning

confidence: 99%

The effect of cobalt/copper ions on the structural, thermal, optical, and emission properties of erbium zinc lead borate glasses

Taha

Saeed

2023

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A host glass network of 70B2O3–10Pb3O4–18ZnO–2Er2O3 (ErCoCu1) was proposed and the impact of 1 mol% of Co or/and Cu ions on its structural, thermal, optical, and green emission properties was studied extensively. The X-ray diffraction spectra confirmed the amorphous structure of the produced glasses. Density and density-based parameters behavior showed that the Co or/and Cu ions fill the interstitial positions of the proposed ErCoCu1 network, causing its compactness. Both ATR-FTIR and Raman Spectra affirmed the formation of the fundamental structural units of the borate network, B–O–B linkage, BO3, and BO4. Additionally, the penetration of Co or/and Cu ions inside the ErCoCu1 converts the tetrahedral BO4 units to triangle BO3 causing its richness by non-bridging oxygens. The addition of Co or/and Cu reduces the glass transition temperature as a result of the conversion of the BO4 to BO3 units. Optical absorption spectra for the host glass ErCoCu1 showed many of the distinguished absorption bands of the Er3+ ion. Penetration of Co ion generates two broadbands referring to the presence of Co2+ ions in both tetrahedral and octahedral coordination and Co3+ ions in the tetrahedral coordination. In the Cu-doped glasses, the characteristic absorption bands of Cu2+ and Cu+ were observed. A green emission was generated from the ErCoCu1 glass under 380 nm excitation wavelength. Moreover, no significant effect of Co or/and Cu on the emission spectra was recorded. The considered glasses had appropriate properties qualifying them for optoelectronics and nonlinear optics applications.

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“…The width of these band tails is known as the Urbach energyΔ𝐸. To calculate the Urbach energy ∆E according to Urbach and Tauc model, the following relation is valid [30][31][32][33][34][35] ln 𝛼(𝜈) = ln 𝛼 𝑜 + ( ℎ𝜈 Δ𝐸 )…”

Section: Fig 6 Optical Transmission Spectra Of the Studied Glassesmentioning

confidence: 99%

Impact of Gd3+ on Optical, Local Structure, and Attenuation Properties of Lead Borosilicate Glasses

et al. 2022

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Four grades of gadolinium doped lead borosilicate glasses were prepared using the normal melt-quenching process as well as a free gadolinium sample. The structural changes induced by Gd 3+ ions content in the network of the prepared glasses were examined using FTIR and density. The analysis of the structural measurements indicates that the Gd2O3has an obvious effect on the lead borosilicate glass network. Analysis of the optical data reveals the compositional dependence of the optical band gap and Urbach energy. Variation in these optical parameters has been associated with the structural changes occurring in the glass network with the increase in Gd 3+ ions content. The band gap values of the considered glasses reflected their semiconducting nature. Gamma ray attenuation parameters, fast neutron removal cross section, and thermal neutrons cross section results reflected the role of Gd 3+ as an enhancer to the shielding behaviour of the synthesized lead borosilicate glasses. The low band gap and efficient attenuation criteria of the investigated glass matrix make them of high interest for optical and shielding applications.

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Novel Er3+ doped heavy metals-oxyfluorophosphate glass as a blue emitter

Cited by 17 publications

References 27 publications

Ni ions doped oxyflourophosphate glass as a triple ultraviolet–visible–near infrared broad bandpass optical filter

Ni ions doped oxyflourophosphate glass as a triple ultraviolet–visible–near infrared broad bandpass optical filter

The effect of cobalt/copper ions on the structural, thermal, optical, and emission properties of erbium zinc lead borate glasses

Impact of Gd3+ on Optical, Local Structure, and Attenuation Properties of Lead Borosilicate Glasses

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