Large scale synthesis and enhanced field emission properties from hybrid CuO/ZnO nanorod

Jungwoo Lee, Eunkyung Park, Taehee Park, Jongtaek Lee, Myung Mo Sung, Whikun Yi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Upper-directionally grown nanorods were synthesized on a large scale by a simple method of direct heating of Cu foil in air. Hybrid CuO/ZnO nanorods were fabricated by ZnO thin film coating using magnetron sputtering. Field emission (FE) measurements of CuO and hybrid CuO/ZnO nanorod films show that they have turn-on field of 3.81 and 3.24 V/μm and a current density of 0.39 and 1.1 μ/cm 2 under an applied field of about 6.6 V/μm, respectively. By comparing X-ray photoelectron spectroscopy analysis and the FE properties of two types of samples, we concluded that the narrowing of band gap due to the change of electron binding energy of hybrid CuO/ZnO nanorods effectively improved FE.

Original languageEnglish
Pages (from-to)7299-7302
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume11
Issue number8
DOIs
StatePublished - 2011 Aug 1

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Nanotubes
Photoelectron Spectroscopy
Heating
Air
Electrons

Keywords

  • Cuo nanorod
  • Field emission
  • ZnO nano-thin film

Cite this

Lee, Jungwoo ; Park, Eunkyung ; Park, Taehee ; Lee, Jongtaek ; Sung, Myung Mo ; Yi, Whikun. / Large scale synthesis and enhanced field emission properties from hybrid CuO/ZnO nanorod. In: Journal of Nanoscience and Nanotechnology. 2011 ; Vol. 11, No. 8. pp. 7299-7302.
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Large scale synthesis and enhanced field emission properties from hybrid CuO/ZnO nanorod. / Lee, Jungwoo; Park, Eunkyung; Park, Taehee; Lee, Jongtaek; Sung, Myung Mo; Yi, Whikun.

In: Journal of Nanoscience and Nanotechnology, Vol. 11, No. 8, 01.08.2011, p. 7299-7302.

Research output: Contribution to journalArticle

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