The improvement of operational parameters such as ignition, operating voltages and radiant output of microplasma devices by introduction of multiwall carbon nanotubes (CNT) was analyzed. The ignition voltages were reduced by 14%-18% with introduction of CNTs for Ne pressures of 100-300 Torr. The radiative efficiencies were increased with CNTs by 6%-9% in the 300-800 nm spectral region over the entire pressure range. The results from voltage-current characteristics for two device configurations show that electrons generated within cathode microcavity by CNT field emission were most effective in impacting device performance.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)