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The roles of ruthenium nanoparticles decorated on thin multi-walled carbon nanotubes in the enhancement of field emission properties
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10.1063/1.3675460
/content/aip/journal/apl/100/2/10.1063/1.3675460
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/2/10.1063/1.3675460

Figures

Image of FIG. 1.
FIG. 1.

(Color online) SEM images of (a) pristine and (c) RuO2 deposited t-MWCNTs. TEM images of (b) pristine CNTs, (d) RuO2-coated CNTs, and RuO2-coated CNTs after annealing at (e) 300 °C, (f) 600 °C, and (g)1000 °C. (h)-(k) Ru 3d and C 1s core-level spectra obtained from (a)-(f). (l) O 1s core-level spectra of RuO2-coated CNTs before and after annealing at 300 °C and 600 °C.

Image of FIG. 2.
FIG. 2.

(Color online) Emission current density as a function of the applied field and FN plot (inset) obtained from pristine, RuO2-deposited, and the Ru-NPs decorated CNTs after annealing at 300 °C, 600 °C, and 1000 °C.

Image of FIG. 3.
FIG. 3.

(Color online) UPS spectra in the region of the (a) secondary-cutoff and (b) valence band maximum for the pristine, RuO2-deposited, and Ru-NPs decorated CNTs. (c) Changes in the WF (square) and the integrated area of DOS (circle) as a function of the annealing temperature.

Tables

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Table I.

Experimental results of UPS and the J-E characteristics. (The field enhancement factor (β) was calculated from the slope (κ) of the FN plot.)

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/content/aip/journal/apl/100/2/10.1063/1.3675460
2012-01-09
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The roles of ruthenium nanoparticles decorated on thin multi-walled carbon nanotubes in the enhancement of field emission properties
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/2/10.1063/1.3675460
10.1063/1.3675460
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