Ultra-long chiral carbon nanotube, and preparation method and application thereof and high-performance photoelectric device

The invention provides a super-long chiral carbon nanotube, and a preparation method and application thereof and a high-performance photoelectric device, and relates to the technical field of carbon nanotubes; the diameter of the super-long chiral carbon nanotube is 1.5-5.5 nm, and the length of the super-long chiral carbon nanotube is 100-650 mm; the super-long chiral carbon nanotube comprises adouble-walled carbon nanotube and a three-walled carbon nanotube; each tube layer is semiconductive, and the helical angle is greater than 10 degrees; the super-long chiral carbon nanotube provided bythe invention comprises a double-walled carbon nanotube and a three-walled carbon nanotube, is perfect in atomic arrangement and stable in structure, has narrow chiral distribution, and has unique chiral relevance between tube walls, so that the super-long chiral carbon nanotube has excellent optical, electrical, mechanical and thermal properties, and has a wide application prospect in the fieldof high-performance photoelectric devices.