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Metasurface Broadband Solar Absorber

Azad, Abul K ; Kort-Kamp, Wilton J M ; Sykora, Milan ; Weisse-Bernstein, Nina R ; Luk, Ting S ; Taylor, Antoinette J ; Dalvit, Diego A R ; Chen, Hou-Tong

Scientific reports, 2016-02, Vol.6 (1), p.20347-20347, Article 20347 [Periódico revisado por pares]

England: Nature Publishing Group

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  • Título:
    Metasurface Broadband Solar Absorber
  • Autor: Azad, Abul K ; Kort-Kamp, Wilton J M ; Sykora, Milan ; Weisse-Bernstein, Nina R ; Luk, Ting S ; Taylor, Antoinette J ; Dalvit, Diego A R ; Chen, Hou-Tong
  • Assuntos: Frequency dependence ; I.R. radiation ; MATERIALS SCIENCE ; Metamaterials ; NANOSCIENCE AND NANOTECHNOLOGY ; Photovoltaic cells ; Polarization ; Silicon ; Silicon dioxide
  • É parte de: Scientific reports, 2016-02, Vol.6 (1), p.20347-20347, Article 20347
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    LA-UR-15-24569; SAND-2017-0018J; SAND-2017-0019J
    USDOE National Nuclear Security Administration (NNSA)
    AC52-06NA25396; AC04-94AL85000
  • Descrição: We demonstrate a broadband, polarization independent, wide-angle absorber based on a metallic metasurface architecture, which accomplishes greater than 90% absorptance in the visible and near-infrared range of the solar spectrum, and exhibits low absorptivity (emissivity) at mid- and far-infrared wavelengths. The complex unit cell of the metasurface solar absorber consists of eight pairs of gold nano-resonators that are separated from a gold ground plane by a thin silicon dioxide spacer. Our experimental measurements reveal high-performance absorption over a wide range of incidence angles for both s- and p-polarizations. We also investigate numerically the frequency-dependent field and current distributions to elucidate how the absorption occurs within the metasurface structure.
  • Editor: England: Nature Publishing Group
  • Idioma: Inglês
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