Field emission characteristics of electrochemically synthesized nickel nanowires with oxygen plasma post-treatment

Jinsoo Joo, Sun Jeong Lee, Dong Hyuk Park, Young Soo Kim, Yeonhee Lee, Cheol Jin Lee, Seong Rae Lee

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The field emissive, electrical, magnetic, and structural characteristics of nickel (Ni) nanowires synthesized using the electrochemical deposition method with an alumina nanoporous template are reported. The synthesis and formation of Ni nanowires were confirmed by XRD, SEM, and HR-TEM experiments. Ferromagnetic hysteresis curves and the metallic temperature dependence of the current-voltage characteristics were observed for the Ni nanowire systems. The nanotip emitters of the field emission cells of the Ni nanowires after O2 plasma treatment were easily patterned using the solution drop casting (SDC) method, in which the Ni nanowires were homogeneously dispersed in organic solvents, and then dropped and dried on an n-type doped Si substrate as the cathode. For the O2 plasma treated Ni nanowires, we observed that the inhomogeneous oxidized layer on their surface was reduced, that the current density of the field emission cell increased from ∼3.0 × 10-9 to ∼1.0 × 10-3 A cm-2 due to field emission, and that the lowest threshold electric field was ∼4 V νm-1. The field enhancement factor was estimated as ∼1300 for the O2 plasma treated Ni nanowires. The evolution of the field emission obtained from the phosphor screen was observed at different applied electric fields.

Original languageEnglish
Article number024
Pages (from-to)3506-3511
Number of pages6
JournalNanotechnology
Volume17
Issue number14
DOIs
Publication statusPublished - 2006 Jul 28

Fingerprint

Nanowires
oxygen plasma
Nickel
Field emission
field emission
nanowires
nickel
Oxygen
Plasmas
Nanotips
Electric fields
electric fields
Aluminum Oxide
Current voltage characteristics
cells
Phosphors
Organic solvents
phosphors
Hysteresis
Electrodes

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Field emission characteristics of electrochemically synthesized nickel nanowires with oxygen plasma post-treatment. / Joo, Jinsoo; Lee, Sun Jeong; Park, Dong Hyuk; Kim, Young Soo; Lee, Yeonhee; Lee, Cheol Jin; Lee, Seong Rae.

In: Nanotechnology, Vol. 17, No. 14, 024, 28.07.2006, p. 3506-3511.

Research output: Contribution to journalArticle

Joo, Jinsoo ; Lee, Sun Jeong ; Park, Dong Hyuk ; Kim, Young Soo ; Lee, Yeonhee ; Lee, Cheol Jin ; Lee, Seong Rae. / Field emission characteristics of electrochemically synthesized nickel nanowires with oxygen plasma post-treatment. In: Nanotechnology. 2006 ; Vol. 17, No. 14. pp. 3506-3511.
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