Field emission of carbon nanotubes (CNTs) was remarkably improved by lanthanum-hexaboride (LaB 6) nano-particles (NPs) decoration. CNTs were grown on the silicon substrate by chemical vapor deposition. Field emission of bare CNTs and LaB 6-NPs decorated CNTs was carried out under same conditions. Physical, morphological, elemental, and graphitic nature changes were ascertained by scanning electron microscope, transmission electron microscope, energy dispersive x-ray spectroscopy, and Raman analysis. LaB 6-NPs decorated CNTs show significant reduction of turn-on electric-field from 3.0 to 2.1 V/μm. A remarkable improvement of more than six-fold from 2.05 to 13.19 mA/cm 2 at a field of 4.6 V/μm was also observed in the current-density. © 2012 American Institute of Physics.
CITATION STYLE
Kumari, M., Gautam, S., Shah, P. V., Pal, S., Ojha, U. S., Kumar, A., … Tandon, R. P. (2012). Improving the field emission of carbon nanotubes by lanthanum-hexaboride nano-particles decoration. Applied Physics Letters, 101(12). https://doi.org/10.1063/1.4754110
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