Thin Films of Carbon Nanotubes via Ultrasonic Spraying of Suspensions in N-Methyl-2-Pyrrolidone and N-Cyclohexyl-2-Pyrrolidone

Jeffrey Blackburn, Anthony Wiley, Josh Holt, Brian Larsen, Steven Liddiard, Jonathan Abbott, Mallorie Coffin, Richard Vanfleet, Robert Davis

Research output: Contribution to journalArticlepeer-review

11 Scopus Citations

Abstract

Described is a method for ultrasonically spraying thin films of carbon nanotubes that have been suspended in organic solvents. Nanotubes were sonicated in N-methyl-2-pyrrolidone or N-cyclohexyl-2-pyrrolidone (CHP) and then sprayed onto a heated substrate using an ultrasonic spray nozzle. The solvent was quickly evaporated, leaving a thin film of randomly oriented nanotubes. Unlike other methods of spraying nanotube films, this does not require removal of surfactant after spraying and is compatible with creating films of functionalized nanotubes. Film thickness was controlled by the spray time and films were sprayed with thicknesses between 10 and 500nm. Single-walled, multiwalled, and functionalized multiwalled nanotubes were sprayed. Transparent conducting thin films prepared by spraying single-walled carbon nanotubes dispersed in CHP demonstrated similar sheet resistance (for a given optical transmittance) as those prepared by spraying aqueous polymer-based dispersions that required postdeposition polymer removal.

Original languageAmerican English
Article number011218
Number of pages5
JournalJournal of Vacuum Science and Technology B: Nanotechnology and Microelectronics
Volume32
Issue number1
DOIs
StatePublished - 1 Jan 2014

Bibliographical note

Publisher Copyright:
© 2014 American Vacuum Society.

NREL Publication Number

  • NREL/JA-5900-60866

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