PVK-grafted multiwalled carbon nanotube materials with enhanced mobility for electronic devices

Abstract

Carbon nanotubes are unique due to their exceptional optical, electrical, thermal, and mechanical capabilities. This research included enhancing the electrical conductivity of a poly (9-vinyl carbazole) (PVK)-based organic semiconductor by combining it with a multi-walled carbon nanotube (MWCNT). The electrical conductivity was calculated utilizing composites of PVK-doped CNTs. In an organic medium, the composites were synthesized via in situ chemical polymerization. The immobility of PVK in the form of oxidation, high conductivity, and permitting electrochemical behavior of the materials for application in electronics was investigated. The study involved composites that alter electrical conductivity and different structure that shows stable dispersion in the PVK polymer of various molecular weights. It is an effective nanotube dispersion at low PVK concentration. X-ray powder diffraction (XRD), ultraviolet-visible spectroscopy, Thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR) were used to validate the generation of composites from synthesized CNTs and composites. The morphological structures were examined using field emission scanning electron microscopy (FESEM). The electrical conductivity was evaluated, and the movement of charge between polymers and CNTs was discussed.

Keywords

• MWCNT
• Poly (9-vinyl carbazole)
• Chemical Polymerization method
• Electrical conductivity
• Characterization