Optical Spectroscopic Analysis of High Density Lead Borosilicate Glasses

Saeed, Aly; Elbashar, Y. H.; El‐Kameesy, S. U.

doi:10.1007/s12633-015-9391-7

Cited by 27 publications

(10 citation statements)

References 19 publications

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“…Heavy metals oxide glasses have an interesting role in photonic devices because of their optical properties, such as high refractivity and optical nonlinearity [16][17][18][19] . Hence, heavy metals oxyfluorophosphate glasses are promising hosts for several photonic applications because they have both oxides and fluorides characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…Trivalent erbium ion Er 3+ is usually used in various hosts as a dopant because of its peculiar optical properties. Generally, Er 3+ ion is an ideal candidate for photonic applications due to its rich energy levels in the ultraviolet, visible, and near-infrared ranges [16][17][18][19] . Since white light emitters are still in continuous need of development, numerous studies in this regard using different host materials and doping were carried out.…”

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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 wide technological applications of phosphate glasses enable it to be considered of much relevance in science of glass such as laser protections and nuclear applications [1][2][3][4][5][6][7][8][9][10][11]. The easiness of network modification of the zinc phosphate glasses through additive strong glass forming character, low glass transition temperature, and high thermal expansion coefficient make them of significant interest in glass research [12,13].…”

Section: Introductionmentioning

confidence: 99%

ESR and magnetic studies of nickel ions doped P2O5–ZnO–Na2O glassy system

Rayan¹,

Elbashar²,

Moslem³

2020

Rev. Mex. Fís.

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We prepared 42P2O5–40ZnO–(18-x)Na2O–(x)NiO glasses doped with xNiO where 1 ≤ x ≤ 6 mol.%. The optical absorption indicates that the nickel ions exist in both sites tetrahedral and octahedral as the concentration of NiO is increased. This investigation has provided the increasing degree of disorder in the glass network at higher concentrations of NiO. The magnetic characteristics investigated by two techniques electron spin resonance (ESR) spectra and magnetic properties using vibrating sample magnetometer (VSM) at room temperature. The ESR spectra exhibit resonance signal without hyperfine interaction of all the investigated glass samples. It is found that Ni2+ ions were in octahedral sites and it has 3A2g as ground state. The spin-Hamiltonian parameters are evaluated from the ESR spectra and we found a variation of and with different nickel concentration. Interesting results are found for the number of Ni2+ ions participating in resonance (N) and paramagnetic susceptibility (χ). The magnetic properties were performed at room temperature under an applied field of 20 kOe and the hysteresis loops of the powders were extracted for all the considered samples.

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“…Fluoride host glasses have high quantum yield for conversion luminescence due to the ionic bond and low photon energy of fluoride [5][6]. Heavy metal glasses are excellent host materials for transition metal TM and rare earth metal ions RE 3+ and have numerous practical applications in the field [7][8]. The high solubility of high concentration of rare earth, RE, oxides in metal oxyfluorophosphate glass enabled it to be one of the most suitable host networks for RE 3+ ions [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…At low ratios of phosphate/ fluoride (P/F ratios), the local environment of the RE 3+ ions seem to dominate by fluoride ligation, which is important for higher emission efficiency and phonon-assisted energy transfer processes [5][6][7][8][9][10]. The poor chemical durability of phosphate glass may treat via addition of various rareearth ions, alkali and alkaline earth metal oxides [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Thermal and Mechanical Properties of Oxyfluorophosphate Glass Containing Er3+/Yb3+

2020

Egyptian Journal of Solids

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Modified Erbium-Ytterbium co-doped oxyfluorophosphate glasses were prepared via melt quenching method. The dependence of thermal and mechanical properties on Er 2 O 3 dopants were investigated. The microhardness is found to decrease with the dopant concentration due to the indentation size effect. The observed decrease of the glass transition temperature Tg with increasing dopant concentration are elucidated in terms of the bonding strength of the glass network. Increasing of Er 2 O 3 changes the network structure of oxyfluorophosphate glass and improves the thermal stability. The obtained thermal and mechanical results of these Er 2 O 3 added oxyfluorophosphate glasses support their applications in various technological fields.

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Optical Spectroscopic Analysis of High Density Lead Borosilicate Glasses

Cited by 27 publications

References 19 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

ESR and magnetic studies of nickel ions doped P2O5–ZnO–Na2O glassy system

Thermal and Mechanical Properties of Oxyfluorophosphate Glass Containing Er3+/Yb3+

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