Formation of Au-Ag alloy nanoparticles in amorphous silicon using sequential ion implantation

Novaković, M.; Popović, Maja; Noga, Pavol; Vaňa, Dušan; Rakočević, Zlatko Lj.

doi:10.1016/j.nimb.2020.03.021

Cited by 7 publications

(5 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our work, the adopted current density is 4.0 μA•cm −2 in order to save the time cost of implantation. Such a current density, in fact, far surpasses those adopted in other works [18,20,21]. Therefore, Ag/SiO 2 sample can reach a higher temperature due to the drastic ion beam heating during the implantation [29].…”

Section: Resultsmentioning

confidence: 85%

“…In a nanocomposite layer are lots of metal NPs that play a key role in the property of device [17]. Depending on the differences in metal ion species, implantation condition, and treatment after implantation, the metal NPs embedded in the nanocomposite layers are also allowed to be hollow [18], rod-like [19], coreshell [20], and alloyed [21]. They are distinctive in morphology and/or composition, and thus, the corresponding devices might possess novel properties.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Metal ion implantation into transparent dielectric slab: an effective route to high-stability localized surface plasmon resonance sensors

Wang¹,

Wang²,

Liu³

et al. 2021

Nanotechnology

View full text Add to dashboard Cite

Ag/SiO2 and Au/SiO2 samples were prepared by separately implanting 30 keV Ag and Au ions into 0.5-mm-thick SiO2 slabs at a fluence of 6 × 1016 ion·cm−2, and their optical and structural properties were studied in detail by using a fiber spectrometer and a transmission electron microscope, respectively. Our results showed that the two samples featured by their respective nanocomposite surface layers were asymmetrical in structure, and hence, their characteristic signals in the reflectance spectra excited by the lights incident from the rear surfaces were able to exhibit corresponding blueshifts when the overlays on the implanted surfaces were increased in refractive index with respect to air. Our results also showed that each of characteristic signals was strongly dependent on the localized surface plasmon resonance (LSPR) behavior of the involved Ag or Au nanoparticles (NPs), and it could not appear at a wavelength position smaller than or equal to that of the LSPR absorption peak since the involved Ag or Au NPs were quite small in size. These results meant that the two samples could be regarded as the LSPR sensors with a negative refractive index sensitivity (RIS), although their sensing abilities would lose when the overlays were very large in refractive index. Especially, the two samples were demonstrated to be relatively high in stability because the involved Ag and Au NPs were closely hugged and chemically protected by the matrices of SiO2, and consequently, they could have a chance to become prospective sensing devices in some special fields as long as their RISs and linearities could be improved in the future. The above findings substantially confirmed that the metal ion implantation into transparent dielectric slab was an effective route to the high-stability LSPR sensors.

show abstract

Section: Resultsmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Metal ion implantation into transparent dielectric slab: an effective route to high-stability localized surface plasmon resonance sensors

Wang¹,

Wang²,

Liu³

et al. 2021

Nanotechnology

View full text Add to dashboard Cite

show abstract

“…Many research studies have proven that metal nanocrystals (e.g., Ag, Au, etc.) can be formed directly in silicon and silicon dioxide by ion implantation. − Also, for nitride-based charge trap memory with SiO 2 /Si 3 N 4 /SiO 2 storage structure, Si 3 N 4 has a work function of 4.9 eV, and the deeply trapped electrons are not easily detrapped during erasing . Conversely, silver has a work function of 4.26 eV, which can form a suitable trap level that is neither too deep to affect the operating speed nor too shallow to cause charge leakage.…”

Section: Introductionmentioning

confidence: 99%

Modulating the Performance of MoS₂-Based Nanocrystal Memory via Ag Ion Implantation

Wang

Pei

et al. 2023

ACS Appl. Electron. Mater.

View full text Add to dashboard Cite

Nonvolatile flash memory is an important component of the semiconductor memory device, which is widely used in a variety of portable electronic equipment. As traditional flash memory approaches its physical limit, reduced reliability and performance degradation have become unavoidable. Two-dimensional (2D) layered materials exhibit excellent electronic properties even at the atomic level and have been considered as a promising development direction for future flash memory. Here, we report a MoS2-based Ag nanocrystal memory. The fabricated memory device can form the memory stack in one step through metal ion implantation, omitting tedious deposition steps compared to the conventional process. The fabricated silver nanocrystal memory exhibits a 9 V memory window and a high ON/OFF current ratio (>107). In addition, the device also exhibits good endurance characteristics of more than 104 cycles. The ion implantation technology and the 2D nature of the channel can be used for the fabrication of flexible nanoelectronic memory devices with large-scale integration.

show abstract

“…35 This limitation could be overcome by the synthesis of Au@Ag bimetallic NPs due to the possibility of optimizing the plasmon absorption energy to enhance the luminescence by boosting the suitable synergistic phenomenon. 35,36 The formation of Au@Ag NPs via ion implantation has been investigated, 37,38 but little attention has been given to their plasmonic effect on the spectroscopic properties of RE ions. In this work, the plasmonic effects of Au@Ag NPs in a Er 3+ -doped GeO 2 -PbO glass were investigated, which promoted considerable boosting for the emission at 1.53 μm (NIR).…”

Section: ■ Introductionmentioning

confidence: 99%

“…The formation of Au@Ag NPs via ion implantation has been investigated, , but little attention has been given to their plasmonic effect on the spectroscopic properties of RE ions. In this work, the plasmonic effects of Au@Ag NPs in a Er 3+ -doped GeO 2 -PbO glass were investigated, which promoted considerable boosting for the emission at 1.53 μm (NIR).…”

Section: Introductionmentioning

confidence: 99%

Formation of Au@Ag Bimetallic Nanoparticles via Ion Implantation and Its Effects on Boosting the Near-Infrared Emission of Er³⁺ Ions in Germanate Glass for Applications in Optical Amplifiers

2022

View full text Add to dashboard Cite

In this work, germanate glasses of composition 59GeO2-41PbO in mol% doped with Er3+ ions were synthesized using the melt-quenching route. Au and Ag nanoparticles and Au@Ag bimetallic nanoparticles were formed on the surface of the germanate glasses by ion implantation followed by thermal treatments. X-ray diffraction patterns confirmed the amorphous structure of the implanted glasses. Molecular dynamics was used to simulate the GeO2–PbO glass structure. Surface plasmon resonance bands centered at 486, 537, and 574 nm, obtained through ultraviolet–visible absorption spectra, supported the formation of Ag, Au, and Au@Ag nanoparticles, respectively. Transmission electron microscopy (TEM) revealed the presence of spherical Au and Ag nanoparticles as well as the presence of nonspherical Au@Ag bimetallic nanoalloys. Refractive index n and extinction coefficient k were measured by ellipsometry. Judd–Ofelt theory was applied to evaluate the phenomenological intensity parameters Ωλ (λ = 2,4,6) , radiative parameters, and stimulated emission cross-sections for glasses doped with Er3+ and implanted with Au @Ag bimetallic nanoalloys. Efficient boosting of the near-infrared emission for the 4I13/2 → 4I15/2 transition was observed in the glass doped with Er3+ ions due to the presence of Au@Ag bimetallic nanoalloys. The possible cause of this improvement in luminescent intensity was attributed to the strong local field effect due to the efficient synergy between Au@Ag bimetallic nanoalloys and the Er3+ ions. The results obtained in this work indicate that the vitreous system GeO2–PbO glass doped with Er3+ ions and with the incorporation of Au@Ag bimetallic nanoalloys via ionic implantation exhibit excellent spectroscopic properties compared to other vitreous host glasses doped with the Er3+, indicating its potential applications in optical amplifiers.

show abstract

Formation of Au-Ag alloy nanoparticles in amorphous silicon using sequential ion implantation

Cited by 7 publications

References 45 publications

Metal ion implantation into transparent dielectric slab: an effective route to high-stability localized surface plasmon resonance sensors

Metal ion implantation into transparent dielectric slab: an effective route to high-stability localized surface plasmon resonance sensors

Modulating the Performance of MoS₂-Based Nanocrystal Memory via Ag Ion Implantation

Formation of Au@Ag Bimetallic Nanoparticles via Ion Implantation and Its Effects on Boosting the Near-Infrared Emission of Er³⁺ Ions in Germanate Glass for Applications in Optical Amplifiers

Contact Info

Product

Resources

About

Formation of Au-Ag alloy nanoparticles in amorphous silicon using sequential ion implantation

Cited by 7 publications

References 45 publications

Metal ion implantation into transparent dielectric slab: an effective route to high-stability localized surface plasmon resonance sensors

Metal ion implantation into transparent dielectric slab: an effective route to high-stability localized surface plasmon resonance sensors

Modulating the Performance of MoS2-Based Nanocrystal Memory via Ag Ion Implantation

Formation of Au@Ag Bimetallic Nanoparticles via Ion Implantation and Its Effects on Boosting the Near-Infrared Emission of Er3+ Ions in Germanate Glass for Applications in Optical Amplifiers

Contact Info

Product

Resources

About

Modulating the Performance of MoS₂-Based Nanocrystal Memory via Ag Ion Implantation

Formation of Au@Ag Bimetallic Nanoparticles via Ion Implantation and Its Effects on Boosting the Near-Infrared Emission of Er³⁺ Ions in Germanate Glass for Applications in Optical Amplifiers