Jason Moscatello - PMMA-CNT Matrix: Functional Materials for Practical Electron Field Emitters

Version 1

      Publication Details (including relevant citation   information):

      Archana Pandey, Abhishek Prasad, Jason Moscatello and Yoke Khin   Yap.

      ACS Nano, Available Online October 18, 2010

      DOI: 10.1021/nn100925g

      Abstract:

      We have created PMMA−CNT matrices by embedding opened-tip   vertically aligned multiwalled carbon nanotubes (VA-MWCNTs) with   poly(methyl methacrylate) (PMMA). These PMMA−CNT matrices are   excellent electron field emitters with an emission threshold   field of 1.675 V/μm, more than 2-fold lower than that of the   as-grown sample. In addition, the emission site density from   these matrices is high, nearly filling up the entire sample   surface. Emission stability tests at 1.35   mA/cm2 were performed continuously for 40 h with no   significant degradation. On the basis of our theoretical   simulation and hypothetical modeling, we attribute these   performances to the reduced screening effect and lower Joule   heating due to the shorter effective transport distance of the   electrons in the MWCNTs.

      Address (URL): http://pubs.acs.org/doi/abs/10.1021/nn100925g