Dispersion method of carbon nanotube, conductive film comprising conjugated polymer-carbon nanotube complex, and thermoelectric device comprising the same

摘要

The present invention relates to a method of dispersing carbon nanotubes, a conductive film including a conjugated polymer-carbon nanotube composite, and a thermoelectric device including the same. According to the present invention, a polycyclic aromatic (PCA) electron donor monomer By mixing a conjugated polymer copolymerized with a polycyclic aromatic electron acceptor monomer and carbon nanotubes and dispersing them in a solvent, unlike P3HT used as a conventional conjugated polymer, the aromatic ring and carbon nanotubes of the polycyclic aromatic monomer Due to the strong interaction of the tube, few-walled carbon nanotubes (FWCNTs) are dispersed into small bundles containing several carbon nanotubes and having a bundle diameter of 10 nm or more and less than 20 nm. By forming a conductive film and forming the conductive film in an irregularly arranged state by a solution process, thermoelectric properties such as electrical conductivity and power factor are improved due to a well-connected network structure in the film, so it can be usefully used in thermoelectric devices. .