Effect of CdS nanocrystals on the photoluminescence of Eu<sup>3+</sup>-doped silicophosphate sol gel glass

Slimen, Fedia Ben; Zaâboub, Z.; Haouari, Mohamed; Mohamed, Naim Bel Haj; Ouada, H. Ben; Chaussedent, Stéphane; Gaumer, Nathalie

doi:10.1039/c7ra01313b

Cited by 32 publications

(10 citation statements)

References 48 publications

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“…A strong peak near 450 cm −1 (labeled “1” in the Figure 3 ) is assigned to a mode called rocking mode or rocking motion that proves the silicate’s three-dimensional network presence in the glass. The oxygen atom, bridging two adjacent silicon atoms forming siloxanes bonds (Si–O–Si), vibrates perpendicularly to the Si–O–Si plane [ 41 , 42 , 43 , 44 , 45 , 46 ]. The next one, a weaker band around 800 cm −1 (labeled “2”) is associated to a symmetric stretching mode, a vertical motion of the oxygen atoms in the Si–O–Si plane [ 41 , 42 , 43 , 44 , 45 ].…”

Section: Resultsmentioning

confidence: 99%

Europium-Doped Sol-Gel SiO2-Based Glasses: Effect of the Europium Source and Content, Magnesium Addition and Thermal Treatment on Their Photoluminescence Properties

et al. 2018

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Rare-earth doped silica-based glasses lead the optical materials due to their tailorable spectroscopic and optical properties. In this context, we took advantage of the sol-gel process to prepare various Eu-doped silica glasses to study their luminescent properties before and after annealing at 900 °C. The effect of magnesium on these properties was studied in comparison with Mg-free-glass. Using TEM, nitrogen sorption, XRD and FT-IR, we confirmed that the magnesium modifies the glass structure and the thermal treatment eliminates the aqueous environment, modifying the structure ordering. The emission spectra and the decay time curves show the advantages of the Mg addition and the annealing on the photoluminescent properties.

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Section: Resultsmentioning

confidence: 99%

Europium-Doped Sol-Gel SiO2-Based Glasses: Effect of the Europium Source and Content, Magnesium Addition and Thermal Treatment on Their Photoluminescence Properties

et al. 2018

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“…However, because of operational challenges, this process can be quite unpredictable. Phosphate is frequently removed through chemical treatment with a variety of materials [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of phosphate ions from water using PVA-NiO nanocomposite based on tuning influence of pulsed laser ablation method

Toghan¹,

Mwafy²,

Mostafa³

et al. 2022

Phys. Scr.

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For the purpose of getting rid of phosphate in the direction of preserving the eco-system, nickel oxide nanoparticles (NiO NPs) have recently been used to address this issue. For that, NiO NPs were generated using a laser ablation in liquid method of PVA solution and encapsulated in a PVA matrix structure with different particle sizes using a nanosecond solid-state laser with a change in laser influence. Then, their physicochemical properties were studied using various methods. It was found that NiO NPs were distributed very well inside the PVA structure, which was confirmed by the presence of both characteristic vibrational peaks of PVA and NiO with shifting in the peak of PVA and the appearance of the main characteristic transition peaks of the d-d transition of NiO, relating to the impedance of the PVA structure with NiO NPs. The optimal conditions for the elimination of phosphate ions from water solutions were determined by examining the impacts of a number of important affected parameters. A concentration of 100 mg/L of phosphate can be removed from a liquid medium at pH 6 using a PVA-NiO nanocomposite. This work lays the route to getting on different nanocomposite materials to get rid of different hazardous chemical compounds.

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“…The reason why the rare earth ions have not been successfully incorporated into the CdS is due to the large radius and charge mismatch between the rare earth ions and the Cd 2+ ions. This leads to inefficient energy transfer (14)(15)(16). Many lanthanum doped materials were prepared in nanoscale and their properties were investigated (17)(18)(19).…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF Ce DOPING ON THE CHARACTERISTIC PROPERTIES OF CdS NANOPARTICLES

EKINC¹,

HOROZ²,

ŞAHIN³

2020

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In our present study, Ce doped CdS nanoparticles were synthesized in room temperature environment by using chemical co-precipitation technique which is cheap in cost. Ce doped CdS nanoparticles ( average particle size: 3.7 nm) were found to have cubic structure as a result of XRD measurements. It has also been clearly observed that Ce dopant ions do not alter the structure of the host semiconductor CdS. Using the spectrum obtained as a result of UV-Vis measurement, the energy band gap of Ce doped CdS nanoparticles was determined as 2.73 eV. This value was observed to be higher than the energy band gap of bulk CdS (2.42 eV). Thus, it can be said that this change in the energy band gap is due to the quantum confinement effect. The maximum IPCE value was 27% for Ce doped CdS nanoparticles while the IPCE values was 4% for pure CdS nanoparticles, respectively. The IPCE of the solar cells improves with the Ce dopant ion. Moreover, the spectral response range of Ce doped CdS nanoparticles widens with the Ce dopant ion. This is attributed to the long lifetimes of the Ce3+ excited states that facilities the transfer of the charge carries to the photoelectrode.

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Effect of CdS nanocrystals on the photoluminescence of Eu³⁺-doped silicophosphate sol gel glass

Abstract: In this work, we investigate the effect of co-doping with CdS nanoparticles on the photoluminescence properties of Eu3+ doped silicophosphate glass prepared via the sol gel method.

Cited by 32 publications

References 48 publications

Europium-Doped Sol-Gel SiO2-Based Glasses: Effect of the Europium Source and Content, Magnesium Addition and Thermal Treatment on Their Photoluminescence Properties

Europium-Doped Sol-Gel SiO2-Based Glasses: Effect of the Europium Source and Content, Magnesium Addition and Thermal Treatment on Their Photoluminescence Properties

Adsorption of phosphate ions from water using PVA-NiO nanocomposite based on tuning influence of pulsed laser ablation method

EFFECT OF Ce DOPING ON THE CHARACTERISTIC PROPERTIES OF CdS NANOPARTICLES

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Effect of CdS nanocrystals on the photoluminescence of Eu3+-doped silicophosphate sol gel glass

Abstract: In this work, we investigate the effect of co-doping with CdS nanoparticles on the photoluminescence properties of Eu3+ doped silicophosphate glass prepared via the sol gel method.

Cited by 32 publications

References 48 publications

Europium-Doped Sol-Gel SiO2-Based Glasses: Effect of the Europium Source and Content, Magnesium Addition and Thermal Treatment on Their Photoluminescence Properties

Europium-Doped Sol-Gel SiO2-Based Glasses: Effect of the Europium Source and Content, Magnesium Addition and Thermal Treatment on Their Photoluminescence Properties

Adsorption of phosphate ions from water using PVA-NiO nanocomposite based on tuning influence of pulsed laser ablation method

EFFECT OF Ce DOPING ON THE CHARACTERISTIC PROPERTIES OF CdS NANOPARTICLES

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Effect of CdS nanocrystals on the photoluminescence of Eu³⁺-doped silicophosphate sol gel glass