Method for making blackbody radiation source

A method for making blackbody radiation source comprises:

• step (S21):
• providing a panel comprising a first surface and a second surface opposite to the first surface, a substrate, and a carbon nanotube array located on and directly contacting with the substrate, wherein the carbon nanotube array comprises a plurality of carbon nanotubes comprising a root portion directly contacting with the substrate and a top portion away from the substrate;
• step (S22):
• coating a black lacquer layer on the first surface of the panel;
• step (S23):
• applying a pressure on a surface of the carbon nanotube array to make the carbon nanotubes of the carbon nanotube array toppled over on a surface of the substrate and form a carbon nanotube paper comprising the plurality of carbon nanotubes, and the plurality of carbon nanotubes in the carbon nanotube paper being parallel to the surface of the substrate;
• step (S24):
• placing the carbon nanotube paper on the black lacquer layer, to make the carbon nanotube paper located between the substrate and the black lacquer layer;
• and
• step (S25):
• peeling off the substrate to separate the plurality of carbon nanotubes in the carbon nanotube paper from the substrate and bond to the black lacquer layer, the plurality of carbon nanotubes in the carbon nanotube paper vertically aligned forms the carbon nanotube array on the surface of the black lacquer layer under a force between the substrate and the plurality of carbon nanotubes in the carbon nanotube paper and a force between the black lacquer layer and the plurality of carbon nanotubes in the carbon nanotube paper, the plurality of carbon nanotubes of the carbon nanotube array substantially perpendicular to the surface of the black lacquer layer, and the top portion of the plurality of carbon nanotubes of the carbon nanotube array directly connecting with the black lacquer layer.