Scattering of light into silicon by spherical and hemispherical silver nanoparticles

Centeno, Anthony; Breeze, Jonathan; Ahmed, Badar; Reehal, H. S.; Alford, N.M.

doi:10.1364/ol.35.000076

Cited by 50 publications

(28 citation statements)

References 12 publications

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“…The absorption efficiency depends on d. Similar phenomenon has been noticed in numerical simulations before. 13 The wavelength dependence of the absorption ratio shown in Fig. 5(b) is in qualitative agreement with the previous numerical researches, 14,15 in which d ∼ 5 nm is typically found in experiments.…”

Section: Mnps On Top Of a Pv Cellsupporting

confidence: 90%

Metal nanoparticles in a photovoltaic cell: Effect of metallic loss

Watanabe

Miyano

2011

AIP Advances

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We examined numerically the contribution of contrasting characteristics of metal nanoparticles, strong polarization and metallic loss, to the total efficiency of photovoltaic cells. A layer of nanoparticle array was chosen as a model. We found that depending on the location of the layer in the cell, the metallic loss offsets the enhanced photoabsorption due to the strong near field. A general procedure to reduce a nanoparticle layer into a sheet of effective continuous medium is presented, which greatly facilitates the quantitative analysis

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Section: Mnps On Top Of a Pv Cellsupporting

confidence: 90%

Metal nanoparticles in a photovoltaic cell: Effect of metallic loss

Watanabe

Miyano

2011

AIP Advances

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“…. ) and patterned nanoparticle arrays with different period have also been thoroughly investigated [36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Resonance Wavelength Dependence and Mode Formation in Gold Nanorod Optical Antennas With Finite Thickness

Dattoma¹,

Grande

Marani³

et al. 2011

PIER B

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Abstract-In this paper we analyze the dependence of the resonance wavelength and mode formation of an optical gold nanorod antenna on its geometrical parameters in the wavelength range 500-1400 nm. In particular, we prove that nanoantennas differ from RF counterparts, since the minima and maxima, i.e., nodes and anti-nodes, of the resonant modes do not go to zero and show very intense peak at the corners due to non-negligible thickness. Moreover, FDTD simulations reveal that the usually considered linear relation between the resonant wavelength and the nanorod length has to be modified when the nanorod thickness is taken into account.

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“…A spacer layer has previously been indicated as an important factor in determining the scattering properties of MNPs, 16,20,21 and the presence of a thin oxide layer can enhance considerably the forward scattering due to particles with a large contact area to the substrate. 22 Given an a-Si substrate, including a thin dielectric spacer layer under the MNPs, can reduce the effective RI and bring large increases in the light absorption enhancement due to plasmonic nanocubes.…”

Section: Effect Of a Dielectric Spacer Layer On Mnp Performancementioning

confidence: 99%

Plasmonic metal nanocubes for broadband light absorption enhancement in thin-film a-Si solar cells

Veenkamp

2014

Journal of Applied Physics

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The behaviour of plasmonic metal nanoparticles (MNPs) placed in contact with a thin dielectric film on a high refractive index substrate is examined through finite-difference time domain simulations. The optical properties of this configuration are studied in the context of light trapping for thin-film amorphous silicon (a-Si) solar cells. We explore several different MNP configurations including both silver (Ag) and aluminium (Al) nanocubes along with traditional Ag nanospheres for reference. We demonstrate a large increase in the fraction of light coupled into the substrate (Fsubs), and consequently in the absorbed power, by spacing nanocubes away from the substrate. Further study concluded that blue-shifting the plasmonic resonances significantly reduced parasitic absorption in the visible spectrum and increased forward scattering by the MNPs. Transitioning to Al MNPs facilitated a large blue-shift in the plasmonic resonances allowing broadband enhancement in light absorption. For wavelengths less than the band-gap of a-Si, combining the effects of Al nanocubes on a 20 nm SiO2 spacer layer with a 25% surface coverage resulted in a 13.8% increase in solar power absorption over cells with optimally designed Ag nanocube and nanosphere arrays, and a 38.9% enhancement over a MNP free reference cell.

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Scattering of light into silicon by spherical and hemispherical silver nanoparticles

Cited by 50 publications

References 12 publications

Metal nanoparticles in a photovoltaic cell: Effect of metallic loss

Metal nanoparticles in a photovoltaic cell: Effect of metallic loss

Resonance Wavelength Dependence and Mode Formation in Gold Nanorod Optical Antennas With Finite Thickness

Plasmonic metal nanocubes for broadband light absorption enhancement in thin-film a-Si solar cells

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