Get access
Advanced Materials

Nearly Single-Chirality Single-Walled Carbon Nanotubes Produced via Orthogonal Iterative Density Gradient Ultracentrifugation

Authors

  • Alexander A. Green,

    1. Department of Materials Science and Engineering and Department of Chemistry, Northwestern University Evanston, Illinois 60208–3108, USA
    Current affiliation:
    1. Present Address: Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02215, USA
    Search for more papers by this author
  • Mark C. Hersam

    Corresponding author
    1. Department of Materials Science and Engineering and Department of Chemistry, Northwestern University Evanston, Illinois 60208–3108, USA
    • Department of Materials Science and Engineering and Department of Chemistry, Northwestern University Evanston, Illinois 60208–3108, USA.
    Search for more papers by this author

Abstract

We describe how iterative, orthogonal density gradient ultracentrifugation (DGU) separations can be used to produce nearly single-chirality (6,5) SWNTs. SWNT network transistors made from these highly pure, ≥98% semiconducting SWNTs simultaneously exhibit high on/off ratios, mobilities, and on-state conductances, suggesting their future application in integrated circuits and near-infrared optoelectronic light emitters and photodetectors.

original image
Get access to the full text of this article

Ancillary