Influence of Mo or/and Co ions on the structural and optical properties of phosphate zinc lithium glasses

Elbatal, Aya; Saeed, Aly; Hendawy, N.; El-Okr, Mohamed; El‐Mansy, M. K.

doi:10.1016/j.jnoncrysol.2021.120678

Cited by 28 publications

(27 citation statements)

References 31 publications

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“…The inlaying of the studied host by Er 3+ ions breaks the P-O-P chain and forms non-bridging oxygens causing augmentation of space between the phosphor atoms. The average phosphor-phosphor separation , which was calculated according to the relation 2 [20][21] and listed in Table 2 confirmed the spacing of the phosphor atoms.…”

Section: Resultsmentioning

confidence: 63%

“…The compositional dependence of density and molar volume are tabulated in Table 2. The value of molar volume was evaluated using the molecular weight of the glass constituents M and the experimental density according to the formula [20][21] .…”

Section: Resultsmentioning

confidence: 99%

“…The optical absorption spectra of the Er 3+ ions free and doped glasses are displayed in [20][21] . Besides these bands, an additional band was observed at 1 mol % of Er 3+ ions concentration and centered around 800 nm, which is attributed to the transition to 4 I 9/2…”

Section: Resultsmentioning

confidence: 99%

“…The structural phase of the produced materials was examined by X-ray diffraction mechanism, Shimadzu XD3A radiation with Cuk α =1.54056 A°. Bulk density was measured using the Archimedes method by measuring the glass piece weight in air and its weight in xylene liquid [20][21] . The value of the density was averaged over five such measurements.…”

Section: Materials and Experimental Techniquesmentioning

confidence: 99%

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Er3+ ion doped low phonon energy glass as a white light emitter

Saeed

Abu-raia

Farag

2021

Egyptian Journal of Solids

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White light emitters remain in the need of continual development and research for new materials. In this context, a low phonon energy glass containing Er 3+ ions was prepared using the conventional melt/casting technique. The chemical compositions of the synthesized materials were analyzed using X-Ray Fluorescence (XRF) measurements. X-Ray Diffraction (XRD) pattern strongly affirms the non-crystalline essence of the produced materials. The behavior of both density and Fourier Transform Infrared (FTIR) spectroscopy denoted that the Er 3+ ions have a modifier role and non-bridging oxygens NBOs were formed inside the studied glass network. The studied glasses have low phonon energy, ranging from 647 to 659 cm -1 . The obtained results of the thermal, thermo-mechanical, mechanical, and optical properties were discussed in light of the structural changes brought about by inserting Er 3+ ions inside the studied network. The present glasses have high thermal stability, high thermal expansion, and high refractive index. With the increase of Er 3+ ion content, the Vickers microhardness VMH decreased from 3.78 GPa to 3.20 GPa. Under near ultraviolet NUV 380 nm excitation wavelength, three emission bands; blue, green, and red are observed. The white light is possible by a suitable combination of these colors. The cool white light emission was confirmed using CIE 1931 chromaticity diagram and correlated color temperature values. According to the obtained results, the studied glasses are nominated as a white light emitter in photonic applications.

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Section: Resultsmentioning

confidence: 63%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Materials and Experimental Techniquesmentioning

confidence: 99%

See 2 more Smart Citations

Er3+ ion doped low phonon energy glass as a white light emitter

Saeed

Abu-raia

Farag

2021

Egyptian Journal of Solids

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“…The structural phase of the prepared materials was examined using X-ray diffraction mechanism [Shimadzu XD3A radiation with Cukα =1.54056 A o ]. Bulk density was measured at room temperature using Archimedes principle by xylene as the buoyancy liquid (0.86 g/cm 3 ) using the relation [20][21] = ( − )…”

Section: 2measurementsmentioning

confidence: 99%

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

Saeed

Sobaih

Abu-raia³

et al. 2021

Opt Quant Electron

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Developed P2O5-ZnO-PbO-WO3-NaF glasses containing Er 3+ ions were prepared by the melt/casting procedures. X-ray diffraction patterns confirmed the amorphicity of the prepared materials. The density and Fourier Transform Infrared FTIR spectroscopy showed that Er 3+ ions play a modifier role and the studied glasses have low phonon energy. The observed decrease in the measured glass transition temperature indicates that the decrease in the bonding strength of the studied glass structure. The studied glass has a high thermal stability. Vickers microhardness results showed the weakening of the glass network. Measured UV-Vis absorption spectra exhibited several bands in the ultraviolet and visible regions. The studied glass has a high refractive index.The metallization criterion showed that the studied glasses have an insulating behavior. The metallization criterion values of the present glasses are in the range of nonlinear optical materials.Under 320 nm excitation wavelength, the studied glass generates three blue bands at 446, 457, and 473 nm. The CIE-1931 chromaticity diagram coordinates confirmed the blue emission of the prepared glass. According to the obtained results, the produced glasses have a high potential for using as efficient luminescence materials for photonic devices in the blue region.

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Impact of ligands on the performance of band-stop and bandpass optical filter of cobalt sodium zinc borate glass

El-Khateeb¹,

Saeed

2023

Opt Quant Electron

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Influence of Mo or/and Co ions on the structural and optical properties of phosphate zinc lithium glasses

Cited by 28 publications

References 31 publications

Er3+ ion doped low phonon energy glass as a white light emitter

Er3+ ion doped low phonon energy glass as a white light emitter

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

Impact of ligands on the performance of band-stop and bandpass optical filter of cobalt sodium zinc borate glass

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