Optical properties of Si nanocrystals embedded in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi>SiO</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>

Gallas, Bruno; Stenger, Ingrid; Kao, C.-C.; Fisson, S.; Vuye, G.; Rivory, J.

doi:10.1103/physrevb.72.155319

Cited by 40 publications

(32 citation statements)

References 33 publications

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“…A layer accounting for surface roughness was added too. The procedure to extract the dielectric function of the nanoparticles from optical measurements in the visible-UV has been described elsewhere [14]. Similar structures and dielectric functions were obtained on both substrates showing that a similar microstructure (size of nanoparticules, crystalline fraction.…”

Section: Resultsmentioning

confidence: 99%

Near infrared absorption of Si nanoparticles embedded in silica films

Stenger¹,

Siozade²,

Gallas³

et al. 2007

Surface Science

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Section: Resultsmentioning

confidence: 99%

Near infrared absorption of Si nanoparticles embedded in silica films

Stenger¹,

Siozade²,

Gallas³

et al. 2007

Surface Science

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“…32 Each layer was modeled as a mixture of silicon monoxide and silicon dioxide with Si inclusions using the Bruggemann effective medium approximation. 33 The two silicon monoxide and silicon dioxide matrix materials were individually modeled as Cauchy layers, while the nano-crystalline silicon inclusion material was modeled using three Gauss oscillators following the work of Gallas et al 34 For the TEM investigations, specimens were prepared from type B samples. Cross-sectioning was carried out conventionally by cutting, grinding, and subsequent ion milling.…”

Section: Methodsmentioning

confidence: 99%

Resolving the nanostructure of plasma-enhanced chemical vapor deposited nanocrystalline SiOx layers for application in solar cells

Klingsporn

Kirner

Villringer

et al. 2016

Journal of Applied Physics

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Nanocrystalline silicon suboxides (nc-SiO x ) have attracted attention during the past years for the use in thin-film silicon solar cells. We investigated the relationships between the nanostructure as well as the chemical, electrical, and optical properties of phosphorous, doped, nc-SiO 0.8 :H fabricated by plasma-enhanced chemical vapor deposition. The nanostructure was varied through the sample series by changing the deposition pressure from 533 to 1067 Pa. The samples were then characterized by X-ray photoelectron spectroscopy, spectroscopic ellipsometry, Raman spectroscopy, aberration-corrected high-resolution transmission electron microscopy, selected-area electron diffraction, and a specialized plasmon imaging method. We found that the material changed with increasing pressure from predominantly amorphous silicon monoxide to silicon dioxide containing nanocrystalline silicon. The nanostructure changed from amorphous silicon filaments to nanocrystalline silicon filaments, which were found to cause anisotropic electron transport. Published by AIP Publishing. [http://dx

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“…Comparison with recent measurements of the linear dielectric function of Si NCs [11,12] is also instructive. For 4.5 to 6 nm diameter Si NCs, these measurements show a slight blue shift of the E 1 critical point energy, qualititatively consistent with our SHG spectrum of 3 nm Si NCs.…”

Section: Nc At Entrance Scanmentioning

confidence: 94%

Second‐harmonic spectroscopy of Si nanocrystals embedded in silica

Wirth

Wei

Gielis

et al. 2008

Phys. Status Solidi (c)

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Extending previous second‐harmonic generation (SHG) single‐wavelength studies [1] of Si nanocrystals (NCs) embedded in fused silica, we implement spectroscopic cross‐polarized two‐beam SHG (XP2‐SHG) by employing an optical parametric amplifier as a source of widely tunable (1.6 ≤ Eph ≤ 2.4 eV) femtosecond pulses. Subsequent isolation of the SH signal produced by the NCs yields the oscillator strength and phase of their nonlinear response. We obtain a broad resonance between bulk Si E1 and E2 critical points. Possible explanations for the spectroscopic result are discussed. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Optical properties of Si nanocrystals embedded inSiO2

Cited by 40 publications

References 33 publications

Near infrared absorption of Si nanoparticles embedded in silica films

Near infrared absorption of Si nanoparticles embedded in silica films

Resolving the nanostructure of plasma-enhanced chemical vapor deposited nanocrystalline SiOx layers for application in solar cells

Second‐harmonic spectroscopy of Si nanocrystals embedded in silica

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