Defect-assisted heavily and substitutionally boron-doped thin multiwalled carbon nanotubes using high-temperature thermal diffusion

Yoong Ahm Kim, Shunta Aoki, Kazunori Fujisawa, Yong Il Ko, Kap Seung Yang, Cheol Min Yang, Yong Chae Jung, Takuya Hayashi, Morinobu Endo, Mauricio Terrones, Mildred S. Dresselhaus

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Carbon nanotubes have shown great potential as conductive fillers in various composites, macro-assembled fibers, and transparent conductive films due to their superior electrical conductivity. Here, we present an effective defect engineering strategy for improving the intrinsic electrical conductivity of nanotube assemblies by thermally incorporating a large number of boron atoms into substitutional positions within the hexagonal framework of the tubes. It was confirmed that the defects introduced after vacuum ultraviolet and nitrogen plasma treatments facilitate the incorporation of a large number of boron atoms (ca. 0.496 atomic %) occupying the trigonal sites on the tube sidewalls during the boron doping process, thus eventually increasing the electrical conductivity of the carbon nanotube film. Our approach provides a potential solution for the industrial use of macro-structured nanotube assemblies, where properties, such as high electrical conductance, high transparency, and lightweight, are extremely important.

Original languageEnglish (US)
Pages (from-to)4454-4459
Number of pages6
JournalJournal of Physical Chemistry C
Volume118
Issue number8
DOIs
StatePublished - Feb 27 2014

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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