Morphological and optical properties of aluminum nanoparticles deposited by thermal evaporation on heated substrates

Lachebi, Ines; Fedala, Abdelkrim; Djenizian, Thierry; Hadjersi, Toufik; Kechouane, M.

doi:10.1016/j.surfcoat.2017.09.061

Cited by 19 publications

(17 citation statements)

References 18 publications

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“…28 Other method much less widespread but advantageous consists in the dewetting process during the film growth remaining the heterostructure to a certain temperature, and so avoiding a subsequent annealing process after the film deposition. 10,29 In this way, the control of the resulting morphology of NSs is also possible tuning accurately the growth parameters. During the growth process in which the substrate is maintained at a specific temperature, the mobility of the metallic atoms on the surface is really large enhancing the superficial diffusion process and achieving a stage of 3D islands.…”

Section: An Interesting Methods To Change In a Controlled Way The Morpmentioning

confidence: 99%

Nanostructured Au(111)/Oxide Epitaxial Heterostructures with Tailoring Plasmonic Response by a One-Step Strategy

et al. 2019

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In this work we present a strategy for developing epitaxial incommensurate nanostructured-Au/oxide heterostructures with tuneable plasmonic response. Previously high quality single phase and oriented α-Fe2O3(0001) thin films were achieved, which have been used as a template for the noble metal epitaxial deposition. The complex systems have been grown by pulsed laser deposition on two different type of oxide substrates: α-Al2O3(0001) and SrTiO3(111). A one-step procedure has been achieved tailoring the isolated character and the morphological features of Au nanostructures through the substrate temperature during the Au growth, without altering the structural characteristics of the hematite layer that is identified as single iron oxide phase. The epitaxial character and the lattice coupling of Au/oxide bilayers are mediated through the sort of oxide substrate. Single oriented Au(111) islands are disposed with a rotation of 30º between their crystallographic axes and those of α-Fe2O3(0001). The Au(111) and SrTiO3(111) lattices are collinear while a rotation of 30º happens respect to the α-Al2O3(0001) lattice. The crystallographic domain size and crystalline order of hematite structure and Au nanostructured-layer are dependent on the substrate type and the Au growth temperature respectively. Besides, the functional character of the complex systems has been tested. The localized surface plasmons related to Au nanostructures are excited and controlled through the fabrication parameters, tuning the optical resonance with the degree of Au nanostructuring.

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Section: An Interesting Methods To Change In a Controlled Way The Morpmentioning

confidence: 99%

Nanostructured Au(111)/Oxide Epitaxial Heterostructures with Tailoring Plasmonic Response by a One-Step Strategy

et al. 2019

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“…In contrast, the chemical synthesis of Al-NP seems not a common method since the reduction of Al salts is complicated [19]. Simple metal evaporation followed by different thermal annealing and masking techniques can lead to the formation of well-separated NSs over large areas [20][21][22]. Although the annealing and via a mask can lead to a relatively regular pattern of NSs, in general, this method points to NSs with nearly diverse distribution in shape and size.…”

Section: Aluminum Against Noble Metalsmentioning

confidence: 99%

“…To answer this challenge in this study, due to the experimental data concerning experimental MNSs [14,17,18,20,21,27,28], rstly, elliptical nanoparticles were chosen and divided into three groups based on the oblate or prolate form. Moreover, due to vertical height, some modes were considered for each group.…”

Section: The Glance Of Conventional Modelingmentioning

confidence: 99%

“…In some fabrication methods depending on the different conditions, particles can form a shape similar to an ellipsoid (or part of it) and with different contact angles. On the other hand, the review of AFM and SEM images in the literature suggest that the ellipsoidal NPs for modeling experimental NS could be a suitable choice [14,17,18,20,21,27,28,30,31]. These ellipsoidal NPs are some extent, randomly distributed in shape, size, rotation, and distance from each other.…”

Section: Details Of This Modelingmentioning

confidence: 99%

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Towards realistic modeling of plasmonic nanostructures: the comparative study to determine the impact of optical effects on solar cell improvement

Haidari¹

2021

Preprint

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Plasmonic structures may improve cell performance in a variety of ways. More accurate determining the optical influence, unlike ideal simulations, requires modeling closer to experimental cases. In this modeling, nonregular nanostructures were chosen and for simulation divided into three groups and some modes. For each mode, different sizes of nanoparticles were randomly selected which could result in pre-determined average particle size and standard deviation. By 3D-FDTD, the optical plasmonic properties of that mode in solar cell structure were investigated when nanostructure was added to the buffer/active layer of the organic solar cell. The far and near-field results were used to compare the plasmonic behavior, relying on the material and geometry. By detailed simulations, the Al and approximately Ag nanostructure at the interface of the ZnO/active layer can improve OSC performance optically, especially by the near-field effect. Unlike Au and relatively Ag, the Al nanostructured sample showed less parasitic absorption loss.

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“…Aluminium nanoparticles (Al NPs) are of interest to a variety of applications, such as photocatalysts [1], optical coatings [2], and transparent conductive films [3], as well as propellant and explosive materials [4]. They have been receiving considerable interest lately as plasmonic materials alternative to gold and silver NPs, with their attractive properties such as low cost, high natural abundance, and advantages in device performance, design flexibility, processing, and tenability [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Evolution and Tailoring of DUV Plasmonic Properties in Al Nanoparticle Arrays by UV Irradiation

Ding

Chen

et al. 2018

Journal of Nanomaterials

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Ultraviolet irradiation was used to tailor the surface plasmon band of the densely distributed aluminium nanoparticle arrays fabricated by gas-phase deposition. We showed that the broad surface plasmon resonance band of the as-prepared sample could be tuned to a sharp and strong resonance band in the deep ultraviolet optical range, with a large blue shift of the peak wavelength. The evolution of the surface plasmon resonance properties was attributed to the ultraviolet irradiation-improved surface oxidation of the nanoparticles, which eliminated the near-field couplings between the closely spaced nanoparticles by increasing their interspacing.

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Morphological and optical properties of aluminum nanoparticles deposited by thermal evaporation on heated substrates

Cited by 19 publications

References 18 publications

Nanostructured Au(111)/Oxide Epitaxial Heterostructures with Tailoring Plasmonic Response by a One-Step Strategy

Nanostructured Au(111)/Oxide Epitaxial Heterostructures with Tailoring Plasmonic Response by a One-Step Strategy

Towards realistic modeling of plasmonic nanostructures: the comparative study to determine the impact of optical effects on solar cell improvement

Evolution and Tailoring of DUV Plasmonic Properties in Al Nanoparticle Arrays by UV Irradiation

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