Sm3+:Ag NPs assisted modification in absorption features of magnesium tellurite glass

Yusoff, Nurulhuda Mohammad; Sahar, Md. Rahim; Ghoshal, Sib Krishna

doi:10.1016/j.molstruc.2014.09.039

Cited by 22 publications

(4 citation statements)

References 40 publications

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“…Among all transitions, 4 G 5/2 → 6 H 7/2 (602 nm) is the most dominant one, with intense orange emission. Meanwhile, the emission spectra of the heat-treated samples consist of not only sharp emission peaks from Sm 3+ ions but also an additional broad band from 480 to 560 nm, which may be originated from emission non-plasmonic, molecule like Ag-particles (ML-Ag) [19]. In fact, glass without Ag NPs was also prepared and there is no emission can be detected, which indicates that the broad emission band in the visible range is not caused by glass matrix.…”

Section: Excitation and Emission Spectramentioning

confidence: 99%

“…On the other hand, Ag NPs participate strongly to the enhancement of the efficiency of RE ions and improve the quality of the optical proprieties of the glass and make it more performing owing to the Surface Plasmon Resonance (SPR) [9,17] known as the collective oscillation of the conduction band electrons when they are excited by light [17,18]. The study of tellurite glasses containing Sm 3+ ions coupled with silver NPs has been an active subject in the recent years on account of the interaction between the Sm 3+ ions and the high electromagnetic fields induced by the SPR near the NPs which boost the radiative decay rate [19,20].…”

Section: Introductionmentioning

confidence: 99%

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Coupling between surface plasmon resonance and Sm3+ ions induced enhancement of luminescence properties in fluoro-tellurite glasses

Mechergui¹,

Fares

Mohamed

et al. 2017

Journal of Luminescence

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Fluoro-tellurite glasses co-activated with Samarium (Sm 3+) ions and silver nanoparticles (Ag NPs) were prepared using melt quenching technique. The nucleation and growth of Ag NPs were controlled by thermal annealing process. X-ray diffraction (XRD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), UV-vis-NIR absorption spectroscopy, photoluminescence (PL) and PL lifetime spectroscopy were used to examine the annealing time dependence of the structural and luminescent properties. The amorphous nature of glasses has been confirmed by XRD spectra. The transmission electron microscopy images show the presence of silver NPs having an average diameter in the range of 20-40 nm. Selected area electron diffraction pattern (SAED), as well as EDX analysis spectrum confirm the presence of Ag NPs. Based on the absorption results, the intensity parameters Ω t (t=2, 4, 6), the radiative transition probability (A T), fluorescence branching ratio (β JJ') and radiative lifetimes (τ r) of Sm 3+ ions were calculated using Judd-Ofelt theory. The results suggest that Sm 3+ ions have been incorporated into Ag NPs, which intensified the electromagnetic field around Sm 3+ ions. The luminescence properties of Sm 3+ doped glasses were investigated. It was found that the presence of silver NPs nucleated and growth during the annealing process, improves the photoluminescence (PL) intensity and the PL lifetime relative to the transition from the 4 G 5/2 state to 6 H 5/2 , 6 H 7/2 , 6 H 9/2 and 6 H 11/2 states. Maximum enhancement is observed for the sample heat treated for 8 h. Such enhancement is mainly attributed to the local electric field created by the SPR of Ag NPs. whereas; the quenching is due to the energy transfer from Sm 3+ ions to the silver nanoparticles as well as to the non-plasmonic, molecule likes Ag-particles (ML-Ag). The present results indicate that the glass heat-treated for 8 h has good prospect for Laser emissions at 600 nm.

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Section: Excitation and Emission Spectramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Coupling between surface plasmon resonance and Sm3+ ions induced enhancement of luminescence properties in fluoro-tellurite glasses

Mechergui¹,

Fares

Mohamed

et al. 2017

Journal of Luminescence

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“…Many researchers have found that the addition of nanoparticles could enhanced the optical and luminescence characteristics as has been reported by Amjad et al, (2014) [9] and Dousti et al, (2013) [10]. However, there are only a few researches focus on the effect of nanoparticles towards physical properties [11][12]. It is therefore the aim of this paper to discuss the physical characteristics of tellurite glass doped samarium oxide containing silver nanoparticles.…”

Section: Introductionmentioning

confidence: 87%

Effect of Sm<sup>3+</sup> Concentration on Physical Properties of Magnesium Tellurite Glasses Containing Silver Nanoparticles

Yusoff

Sahar

2016

MSF

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A series of tellurite glass containing samarium ion and silver nanoparticles with a composition of (89.6-x)TeO2-10MgO-(x)Sm2O3-0.4AgCl with 0.2 ≤ x ≤ 1.0mol% have been synthesized by a conventional melt quenching technique. The X-ray diffraction pattern verified the amorphous nature of glasses. A systematic study on the relationship between Sm2O3 concentration and the physical properties of the glass has been made. The effect on the progressive replacement of TeO2 by Sm2O3 on density, molar volume, refractive index and electronic polarisability has been investigated. The results show that density and ionic packing density are in the range of 4.91-5.04 g cm-3 and 0.444 – 0.455, respectively, increases as the amount of Sm2O3 is increased up to 0.8 mol% and decrease afterward. However, the molar volume which is in between, 29.59-30.26 m3 mol-1 decreasing as the amount of Sm2O3 is increased up to 0.8 mol% and increase thereafter. Meanwhile the refractive index which is deduced from optical energy band gap is found to possess a value in the range of 2.37 to 2.45 and electronic polarisability is in the range of 7.14-7.51Å3. All the results will be discussed with respect to the glass composition.

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“…It is designed to take advantage of the difference in dielectric constants between AgNPs and glass substrates to enhance the surrounding electromagnetic field, which causes electrons to enter excited states and increases the probability of energy level jumping of rare earth ions 22 – 24 To the best of our knowledge, related studies have not been reported previously. Therefore, it is necessary to investigate the effect of AgNPs on the infrared luminescence of Er3+ ions in 3.1 μm.…”

Section: Introductionmentioning

confidence: 99%

Ag nanoparticles enhanced 3.1 μm mid-infrared emission of Er3+/Bi+ co-doped oxyfluoride tellurite glasses

Wu,

Zhang

2024

Opt. Eng.

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The Er 3þ ∕Bi þ ∕Ag nanoparticles (NPs) triple-doped oxyfluoride tellurite glasses were prepared by melt-quenching method, showing an intense 3.1 μm mid-infrared fluorescence emission under 980 nm laser diode pumping. The as-prepared tellurite glass samples exhibit good thermal stability and resistance to crystallization based on X-ray diffraction and differential scanning calorimetry measurements. After an introduction of AgNPs into the tellurite glass matrix, a broadband fluorescence emission at 3.1 μm is detected, in which the full width at half maximum (FWHM) is 181 nm. Moreover, the 3.1 μm fluorescence intensity in this Er 3þ ∕Bi þ ∕AgNPs triple-doped glass is enhanced by 42%, compared with a pristine sample, and the corresponding fluorescence lifetime is obtained with a value of 0.53 ms. It is reasonable that there is strong absorption of the incident photons due to the vibration frequency matching between AgNPs and incident photons, it can promote the localized surface plasmon resonance and energy transfer between AgNPs and Er 3þ ions, and in turn lead to an enhancement of fluorescence intensity. The above results demonstrate that the as-prepared Er 3þ ∕Bi þ ∕AgNPs triple-doped oxyfluoride tellurite glasses possess excellent fluorescence properties and may be a good carrier for mid-infrared fibers and laser gain materials.

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Sm3+:Ag NPs assisted modification in absorption features of magnesium tellurite glass

Cited by 22 publications

References 40 publications

Coupling between surface plasmon resonance and Sm3+ ions induced enhancement of luminescence properties in fluoro-tellurite glasses

Coupling between surface plasmon resonance and Sm3+ ions induced enhancement of luminescence properties in fluoro-tellurite glasses

Effect of Sm<sup>3+</sup> Concentration on Physical Properties of Magnesium Tellurite Glasses Containing Silver Nanoparticles

Ag nanoparticles enhanced 3.1 μm mid-infrared emission of Er3+/Bi+ co-doped oxyfluoride tellurite glasses

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