▎ 摘　　要

NOVELTY - Photo-thermoelectric conversion thin film device based on borene includes a thermoelectric power generation layer (2), a light absorption layer (1) on one side of the thermoelectric power generation layer, and a heat dissipation layer (3) on the other side of the thermoelectric power generation layer. The light absorption layer is composed of a borene film, and the thermoelectric power generation layer is bismuth telluride (Bi2Te3) or antimony telluride (Sb2Te3). The thermoelectric power generation layer forms a temperature gradient in the thickness direction, and generates a potential difference through the thermoelectric effect. USE - Photo-thermal conversion film device based on boron alkene. ADVANTAGE - The device has two-dimensional structure that is easy to assemble and process, and is an ideal photo-thermal conversion material. The device solves the problem of large processing difficulty and high cost of the wide spectrum photo-thermal conversion device. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a photo-thermoelectric conversion thin film device based on borene, which involves: (A) selecting Bi2Te3 or Sb2Te3 thin film materials with an area of 0.25-25 cm2 and a thickness of 1-200 micrometer as the thermoelectric power generation layer; (B) constructing a thermally conductive layer on the surface of one side, and the thermally conductive layer has a thickness of 50 nanometer to 10 micrometer, and combining other side of the thermoelectric power generation layer with the heat dissipation layer; (C) preparing a boronene nanomaterial dispersion with a concentration of 0.1-10.0 mg/mL, and then uniformly coating on the surface of the above-mentioned film with a thermally conductive layer; and (D) using femtosecond laser etching or ultraviolet exposure to write the periodic nanostructures of the borene film to form a light absorbing layer. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of photo-thermal conversion film device based on boron alkene. Light absorption layer (1) Thermoelectric power generation layer (2) Heat dissipation layer (3) Heat conduction layer (4)