Structural studies on varied concentrations of europium doped strontium phosphate glasses

Bouabdalli, El Mahdi; Jouad, Mohamed El; Touhtouh, Samira; Sadek, Otmane; Hajjaji, Abdelowahed

doi:10.1016/j.matpr.2022.05.450

Cited by 19 publications

(4 citation statements)

References 35 publications

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“…Glasses composed of silicophosphate compounds doped with rare-earth elements are considered highly promising for a range of applications. These applications include light conversion, the generation of visible and near-infrared radiation, the production of white light-emitting diodes, and the development of light-converting devices [11][12][13][14][15][16][17]. Additionally, trivalent rare-earth ions have been successfully integrated into a diverse range of glass compositions, including silicates and phosphates, enabling the fabrication of active optical devices like lasers, phosphors, and infrared-to-visible up-converters.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, structural, and optical behavior of erbium‐doped silicophosphate glasses for photonics applications

Bouabdalli,

El Jouad,

Touhtouh

et al. 2024

Luminescence

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Erbium‐incorporated silicophosphate glasses are very desirable in principal sectors such as photonics, optoelectronics, lasers, and illuminating diodes. The focus of the current investigation has been on determining how the erbium dopant affects the optical, physical, and structural characteristics of the silicophosphate‐based glasses. The pure silicophosphate glasses and doped with various contents of erbium were prepared by the sol–gel process in this work. The noncrystalline character of the glasses synthesized was confirmed by the XRD patterns that were obtained. The optical measurement showed that the addition of trivalent erbium ions resulted in an increase in the refractive index of the samples and a decrease in their energy band gap values. It demonstrated the presence of P–O–P linkage stretching vibration modes that were both symmetrical and asymmetrical, P–O in PO4 bending vibration modes, OH group elongating and flexure vibrations, and P–O–H water absorption in glasses. The theoretical values of the optical basicity (Ʌth) increased from 0.465 to 0.472, while the values of the interaction parameter (A) decreased from 0.218 to 0.214 . Silicophosphate glasses doped with trivalent erbium ions show promise as optoelectronic and optical filter system materials.

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Section: Introductionmentioning

confidence: 99%

Synthesis, structural, and optical behavior of erbium‐doped silicophosphate glasses for photonics applications

Bouabdalli,

El Jouad,

Touhtouh

et al. 2024

Luminescence

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“…The physico-chemical properties of materials can be determined experimentally, for example by X-ray defraction (XRD), infrared spectroscopy (IR), UV-Visible spectroscopy and other methods of material characterization [10,11], or therapeutically, among the most advanced theoretical methods is density functional theory (DFT) [12]. One of the software packages using DFT is CASTEP (Cambridge Serial Total Ennery Package Software) [13], which provides information on total energies, forces and stresses exerted on an atomic system, as well as the calculation of optimal geometry, band structures, optical spectra and elastic constants.…”

Section: Introductionmentioning

confidence: 99%

DFT study on the electronic, structure, magnetic and optical properties of TiO2 anatase

Sadek,

Touhtouh,

Hajjaji

2023

Preprint

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In this work, the electronic structure, magnetic and optical properties of the anatase phase of titanium dioxide (TiO2) were etudiée by the Density Functional Theory (DFT) method, using the GGA+U method. As a result, the magnetic electronic properties show that anatase is a non-magnetic semiconductor with an indirect gap of 3.202. Optical properties such as dielectric function, refractive index, extinction coefficient, reflectivity, absorption coefficient and conductivity were found to be 8.21, 2.91, 1.98, 0.532, 517000 cm-1 and 8.9 fs-1 respectively. These results are in agreement with the available experimental results.

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“…There are two possible results when a liquid of their intriguing characteristics, such as low melting temperature, high coefficient of thermal expansion, high transparency, low viscosity, low refractive index, low dispersion, and low phonon energy [4,10,11]. Making them important for many applications such as optical data transmission, sensing, detection, laser technologies, and solar cells [11][12][13][14]. In addition, phosphate glasses are not as effective as borosilicate glasses for vitrifying some nuclear wastes [15].…”

Section: Introductionmentioning

confidence: 99%

First examination of the influence of Y3+ ions on the structural, physical and optical properties of strontium phosphate glasses

et al. 2023

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Yttrium-ions-doped strontium phosphate-based glasses were prepared by following the classical melt quenching method. This study focuses on discovering the influence of the yttrium dopant on the physical, optical, and structural characteristics of synthesized glasses. The structural analyzes were performed using X-ray diffraction (XRD) and Fourier transformer infrared (FTIR). All of the examined samples exhibit an amorphous character, according to XRD. FTIR absorption spectra revealed that the phosphate network depolymerized, which increased with the level of Y 2 O 3 as the metaphosphate units decreased and the pyrophosphate species increased. The measured density values were used to evaluate the physical characteristics of the glasses samples. The density decreased from 2.108 to 2.099 g/cm 3 , while the molar volume values increased from 60.974 cm 3 /mol to 62.641 cm 3 /mol, when the yttrium concentration content increased from 0.0 mol. % to 1.5 mol. %. The optical measurement shows that the band gap for the energy values decreased from 6.528 to 5.754 eV, showing the alteration of the structure of strontium phosphate by an effect of the yttrium content. In addition, it was concluded that the refractive index of the samples rises with the yttrium oxide content and is inversely related to their optical band gap. Moreover, when the number of Y 3+ ions is increased, the electronic polarizability increases.The improvement of electronic polarizability gives a good medium for non-linear optical applications. The amount of Y 3+ ions present has a linear connection with the optical basicity of the materials studied. As a result, the studied glass materials could be useful in photonic applications.

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Structural studies on varied concentrations of europium doped strontium phosphate glasses

Cited by 19 publications

References 35 publications

Synthesis, structural, and optical behavior of erbium‐doped silicophosphate glasses for photonics applications

Synthesis, structural, and optical behavior of erbium‐doped silicophosphate glasses for photonics applications

DFT study on the electronic, structure, magnetic and optical properties of TiO2 anatase

First examination of the influence of Y3+ ions on the structural, physical and optical properties of strontium phosphate glasses

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