Silicon-based wide-spectrum absorption photothermal conversion material and preparation method thereof

Silicon-based wide-spectrum absorption photothermal conversion material and preparation method thereof

  • CN 108,394,859 B
  • Filed: 02/01/2018
  • Issued: 09/10/2021
  • Est. Priority Date: 02/01/2018
  • Status: Active Grant
First Claim
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1. A silicon-based spectral absorption photothermal conversion material is characterized in that:

  • the nanowire core-shell structure comprises a core-shell structure body provided with interconnected nanowires, wherein the core-shell structure body comprises an upper structure and a lower structure;

    alloy quantum dots are embedded on the nanowires of the upper structure, and the nanowires of the lower structure are grafted with the nanowires;

    the interconnected nanowires, the embedded alloy quantum dots and the grafted nanowires form a three-dimensional nano hierarchical structure;

    the nanowire of the core-shell structure body is an interconnected core-shell structure nanowire of a metal oxide nanowire coated by Si or Ge or a composite material of the Si and the Ge;

    the metal oxide nanowire is CuO nanowire or Fe2O3The nanowire or NiO nanowire or ZnO nanowire or a composite structure of the above;

    the inlaid alloy quantum dots are core-shell structure nanoparticles formed by coating Cu or Fe or Ni or Zn metal with Si or Ge or a composite material of the Si and Ge or the composite material of the Si and Ge;

    the grafted nano-wire is a silicon nano-wire or a germanium nano-wire.

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