Formation of Self-organized Silver Nanocup-Type Structures and Their Plasmonic Absorption

Mishra, Yogendra Kumar; Adelung, Rainer; Kumar, Gagan; Elbahri, Mady; Mohapatra, Satyabrata; Singhal, Rahul; Tripathi, A.; Avasthi, D.K.

doi:10.1007/s11468-013-9477-2

Cited by 74 publications

(40 citation statements)

References 33 publications

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“…This is why the noble metal nanoparticles have been the focus of nanoplasmonics for a long time. [ 3,4 ] For a typical spherical Au nanoparticle in water, its resonant wavelength locates at 500 nm as shown in Figure 1 . Recently, LSPRs were also observed in the heavily doped semiconductor nano crystals with their charge density as high as 10 21 cm −3 .…”

Section: Concept Of Near-infrared Plasmon From 2d Semimetalmentioning

confidence: 99%

“…[ 27 ] Briefl y, TiCl 4 and CS 2 were selected as Ti and S precursors, mixed, and then heated in the mixed solvent of oleylamine (OAm) and octadecen (ODE) at 300 °C for 3 h. OAm acted as the growth solvent, while ODE as the protecting agent. Here, the width and thickness are fi nely controlled according to the adjustment of temperature and ODE concentration.…”

Section: Elaborate Controls On Width and Thickness Of 2d Tis 2 Nanoshmentioning

confidence: 99%

“…[2][3][4] From then on, plasmonics has evoked considerable attentions due to its rich scientifi c connotation as well as its potential applications in various fi elds. [5][6][7] Especially, LSPRs exhibit enhanced near-fi eld amplitude with high localization and spatial resolution at the resonant wavelength, which is widely used to enhance the performance of biological imaging, [ 8 ] photothermal therapy, [ 9 ] and optoelectronic devices, [ 10,11 ] etc.…”

Section: Introductionmentioning

confidence: 99%

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Near‐Infrared Plasmonic 2D Semimetals for Applications in Communication and Biology

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Section: Concept Of Near-infrared Plasmon From 2d Semimetalmentioning

confidence: 99%

Section: Elaborate Controls On Width and Thickness Of 2d Tis 2 Nanoshmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Near‐Infrared Plasmonic 2D Semimetals for Applications in Communication and Biology

Zhu

Zou

et al. 2016

Adv Funct Materials

126

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“…At present, the research in the photovoltaic device field has mainly focused on the large scale production of the socalled thin-film (or second generation) photovoltaic cells [1][2][3][4][5][6][7]. The approach proposed in literature to reduce the high costs of Si-based materials and processing is the use of thin absorber layers (1-2 lm in thickness) deposited on cheap module-sized substrates, such as glass, plastic, or stainless steel.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale structuration and optical properties of thin gold films on textured FTO

et al. 2014

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In this work, we propose a methodology to synthesize metallic nanoparticles on textured Fluorine Tin Oxide (FTO) surface by laser irradiations of deposited Au films. In particular, the breakup of the Au films into nanoparticles (NPs) is observed as a consequence of the melting and solidification processes induced by laser irradiations. The mean Au NPs size and surface density evolution are analyzed as a function of the laser fluence. Optical characterizations of the glass/FTO/Au NPs multilayer show, in the absorption spectra, plasmonic peaks due to the Au NPs and an improvement of the light absorption efficiency from the sample with larger Au NPs. The simulated trends of the ratio between the scattering and absorption cross section suggest that the absorption efficiency dominates over the scattering efficiency in the spectral range between 200 and 600 nm. The simulation shows that, by varying the NPs radius from about 18 to 24 nm, the radiation-scattered intensity remains symmetric in forward and reverse directions. These results indicate that the surface coverage size distribution of Au NPs is the key parameter to correlate the structural and optical properties of the glass/FTO/Au NPs multilayer. Furthermore, electrical characterizations highlight a reduction in the sheet resistance of the textured FTO due to the presence of the NPs. We compare these results with those obtained for the same systems when standard furnace annealing processes are used to obtain the Au NPs on the textured FTO surface.

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“…For instance, the thermal annealing of thin metallic film (~a few nm in thickness) deposited on a solid surface results in the formation of surface/partially buried metal nano-structures. [7,8] Because of certain advantages such as excellent control on the growth and size distribution, the ion beam synthesis of surface and buried metallic nano-structures received considerable attention in recent years. [9][10][11] The ion beam of any metal can be implanted in any substrate/matrix at desired depth by selecting appropriate energy.…”

Section: Introductionmentioning

confidence: 99%

Medium energy, heavy and inert ion irradiation of metallic thin films: studies of surface nano‐structuring and metal burrowing

Kumar

Mal

Kumar

et al. 2016

Surface & Interface Analysis

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In context to the ion induced surface nanostructuring of metals and their burrowing in the substrates, we report the influence of Xe and Kr ion-irradiation on Pt:Si and Ag:Si thin films of~5-nm thickness. For the irradiation of thin films, several ion energies (275 and 350 keV of Kr; 450 and 700 keV of Xe) were chosen to maintain a constant ratio of the nuclear energy loss to the electronic energy loss (S n /S e ) in Pt and Ag films (five in present studies). The ion-fluence was varied from 1.0 × 10 15 to 1.0 × 10 17 ions/cm 2 . The irradiated films were characterized using Rutherford backscattering spectroscopy (RBS), atomic force microscopy (AFM) and scanning electron microscopy (SEM). The AFM and SEM images show ion beam induced systematic surface nano-structuring of thin films. The surface nano-structures evolve with the ion fluence. The RBS spectra show fluence dependent burrowing of Pt and Ag in Si upon the irradiation of both ion beams. At highest fluence, the depth of metal burrowing in Si for all irradiation conditions remains almost constant confirming the synergistic effect of energy losses by the ion beams. The RBS analysis also shows quite large sputtering of thin films bombarded with ion beams. The sputtering yield varied from 54% to 62% by irradiating the thin films with Xe and Kr ions of chosen energies at highest ion fluence. In the paper, we present the experimental results and discuss the ion induced surface nano-structuring of Pt and Ag and their burrowing in Si.

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Formation of Self-organized Silver Nanocup-Type Structures and Their Plasmonic Absorption

Cited by 74 publications

References 33 publications

Near‐Infrared Plasmonic 2D Semimetals for Applications in Communication and Biology

Near‐Infrared Plasmonic 2D Semimetals for Applications in Communication and Biology

Nanoscale structuration and optical properties of thin gold films on textured FTO

Medium energy, heavy and inert ion irradiation of metallic thin films: studies of surface nano‐structuring and metal burrowing

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