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Enhanced Field Emission from H2 Plasma-Treated α-Fe2O3 Nanowires

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Abstract:

Hematite (α-Fe2O3) nanowires were synthesized by the thermal oxidation of Fe–Ni alloy grids at 900 °C. The effects of hydrogen (H2) plasmas on the morphology and field emission properties of hematite (α-Fe2O3) nanowires were investigated. Many nanocrystallites with sharp tips were found to be produced on the surface of the originally smooth nanowires after H2 plasmas treatment. Field emission measurements demonstrated that the treated α-Fe2O3 nanowires possessed much better performance with turn-on field of ∼3.7 V/m at 0.1 A/cm2 of current density, compared with the as-grown samples.

Keywords: FIELD EMISSION; NANOMATERIALS; SEMICONDUCTORS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2007.676

Publication date: August 1, 2007

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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