Silver nanoparticles on GaSb nanodots: a LSPR-boosted binary platform for broadband light harvesting and SERS

Bhatnagar, Mukul; Ranjan, Mukesh; Mukherjee, S.

doi:10.1007/s11051-015-2913-9

Cited by 10 publications

(6 citation statements)

References 51 publications

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“…These experiments were carried out to measure ( , Δ) in a wide wavelength range (210-1688 nm) at a fixed incidence angle (i.e. 75°) for all the specimen [45]. It is worth noting that there is no change in the measured reflection spectra by providing an azimuthal sample rotation.…”

Section: Anisotropic Specimen: Ag-nanoparticles On Self-organized Nanodotsmentioning

confidence: 99%

Section: Anisotropic Specimen: Ag-nanoparticles On Self-organized Nanodotsmentioning

confidence: 99%

“…Green and violet lines: ε1x,y, yellow and purple lines: ε2x,y, blue line: ε1z, olive line: ε2z. Adapted with permission from [45]. © 2015 Springer Nature Switzerland AG difference due to the enhanced attenuation of light by bigger nanodots fabricated at 800 eV compared to nanodots fabricated at 600 eV ion-energy.…”

Section: Anisotropic Specimen: Ag-nanoparticles On Self-organized Nanodotsmentioning

confidence: 99%

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Ellipsometry Techniques and Its Advanced Applications in Plasmonics

Saini

Augustine

Sooraj

et al. 2021

Modern Techniques of Spectroscopy

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Ellipsometry is a versatile optical measurement technique which uses polarized light as a probe to characterize various properties of materials viz. film thickness, dielectric functions, uniformity, etc. by detecting the change in the polarization state. In spite of the basic applications, ellipsometry technique is highly used in advanced plasmonic applications like characterization of plasmonic -waveguides, -switches, -tweezers, -circuits, metamaterials, etc. In this chapter, we present the sub-wavelength plasmonic response of Ag and Au nanoparticle-nanowire arrays and nanodot patterns which can be characterized using spectroscopic, generalized, and Mueller matrix ellipsometry modes. In particular, probing local surface plasmon resonance (LSPR), tuning LSPR by varying size, shape, particle number density, or interparticle-gap along or across the nanoparticle arrays, probing ordering of metal nanoparticles along the arrays, detecting in-plane or out-of-plane optical anisotropies, optical modelling of anisotropic systems, directional dielectric functions of anisotropic arrangement of metal nanoparticles, annealing-dependent lost-of-anisotropy are of prime interest. Introduction to Optics and Spectroscopic EllipsometryA branch of physics which deals with the light and sight is called optics. The nature and properties of light including their interaction with matter is studied under optics

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Section: Anisotropic Specimen: Ag-nanoparticles On Self-organized Nanodotsmentioning

confidence: 99%

Section: Anisotropic Specimen: Ag-nanoparticles On Self-organized Nanodotsmentioning

confidence: 99%

Section: Anisotropic Specimen: Ag-nanoparticles On Self-organized Nanodotsmentioning

confidence: 99%

See 1 more Smart Citation

Ellipsometry Techniques and Its Advanced Applications in Plasmonics

Saini

Augustine

Sooraj

et al. 2021

Modern Techniques of Spectroscopy

Self Cite

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“…Low-energy ion bombardment is a bottom-up approach used to produce self-organized rippled and dot nanopatterns on semiconductor surfaces. In recent years, the potential use of such patterns as templates has been explored in the field of plasmonics and magnetism [1][2][3][4][5]. Already, a detailed experimental as well as theoretical understanding has been reported, wherein the authors have discussed the growth of these self-organized patterns and the dependency of their periodicity and root mean square (RMS) roughness on various experimental parameters such as ion energy, angle of incidence, fluence, and substrate temperature [6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Role of atom redeposition during rising ion flux in ion-induced nanodot self-assembly on GaSb surfaces

et al. 2017

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In this study, a bottom-up approach of ion irradiation from hot cathode DC discharge plasma was used to investigate the role of energetic ion flux on the self-assembly of GaSb nanodots (NDs) at normal incidence. It was observed that, when increasing the flux in the range of 10-10 ions cm s, the lateral dimension and root mean square (RMS) roughness of NDs is reduced even at constant temperature conditions in the ion energy range from 400-800 eV. The evolution of the surface morphology for different flux regimes is observed in a numerical integration simulation using the nonlinear isotropic damped Kuramoto-Sivashinsky (DKS) equation. By introducing a redeposition term, the DKS equation is found to be in good qualitative agreement with the experimental results. We have demonstrated the linear dependency of the redeposition coefficient on the ion flux and also reported the nonlinear dependency on the thermal diffusion coefficient, transition time, and characteristic length with the flux. In accordance with the nonlinearity, we have also discussed the effect of the variation of the ion flux on the RMS roughness and lateral dimension of NDs.

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“…Efficient light trapping is needed to obtain high absorption in the thin-film active layer. Both metallic and dielectric nanoparticles (NPs) are widely applied to various solar cells (Bhatnagar et al 2015;Nagel and Scarpulla 2013a, b;Liu et al 2013;Zhang et al 2013;Ihara et al 2010;Wang et al 2014). Several mechanisms of nanoparticles have been taken into account, for example, localized surface plasmon polaritons (LSPPs) of metallic nanoparticles, which are used for trapping light (Urban et al 2014;Spinelli et al 2012;Atwater and Polman 2010;Wagner et al 2014;Chong et al 2013;Mokkapati et al 2009;Amendola et al 2010), can strongly absorb light at specific wavelengths inside and around nanoparticles (Temple and Bagnall 2013;Yousif and Samra 2013).…”

Section: Introductionmentioning

confidence: 99%

Design principle for absorption enhancement with nanoparticles in thin-film silicon solar cells

Xuan

2015

J Nanopart Res

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The use of nanoparticles in solar cells has created many controversies. In this paper, different mechanisms of nanoparticles with different materials with diameters varying from 50 to 200 nm, surface coverage at 5, 20, and 60 %, and different locations are analyzed systematically for efficient light trapping in a thin-film c-Si solar cell. Mie theory and the finite difference time domain method are used for analysis to give a design principle with nanoparticles for the solar cell application. Metals exhibit plasmonic resonances and angular scattering, while dielectrics show antireflection and scattering in the incident direction. A table is given to summarize the advantages and disadvantages in different conditions. The silicon absorption enhancement with nanoparticles on top is mainly in the shorter wavelengths below 700 nm, and both Al and SiO 2 nanoparticles with diameter around 100 nm show the most significant enhancement. The silicon absorption enhancement with embedded nanoparticles takes place in the longer wavelengths over 700 nm, and Ag and SiO 2 nanoparticles with larger diameter around 200 nm perform better. However, the light absorbed by Ag nanoparticles will be converted to heat and will lead to decrease in cell efficiency; hence, the choice of metallic nanoparticles in applications to solar cells should be carefully considered. The design principle proposed in this work gives a guideline by choosing reasonable parameters for the different requirements in the application of thin-film solar cells.

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Silver nanoparticles on GaSb nanodots: a LSPR-boosted binary platform for broadband light harvesting and SERS

Cited by 10 publications

References 51 publications

Ellipsometry Techniques and Its Advanced Applications in Plasmonics

Ellipsometry Techniques and Its Advanced Applications in Plasmonics

Role of atom redeposition during rising ion flux in ion-induced nanodot self-assembly on GaSb surfaces

Design principle for absorption enhancement with nanoparticles in thin-film silicon solar cells

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