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Controlled Growth and Field-Emission Properties of NbSe2 Micro/Nanostructured Films

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Abstract:

Single-crystalline NbSe2 nanobelt, nanorod (containing nanotube), and microplate films were grown on Nb substrates by a surface-assisted chemical-vapor-transport (CVT), respectively. The nanobelts have a rectangular section of 50×250 to 300×4500 nm2, and a length up to 330 m. The nanorods have a hexagonal section with a diameter of about 0.1–0.5 m, and a length up to 15 m. The nanotubes have rectangular, pentagonal or round sections with a diameter of about 0.4–0.5 m, a tube-wall thickness of about 45 nm, and a length up to several microns. The microplates have a hexagonal section with a diameter of about 0.05–10 m and a thickness of about 100 to 600 nm. Field-emission experiments using the films as cold electron cathodes showed that they had notable emission currents and low turn-on fields, suggesting their potential applications in field emission devices.

Keywords: FIELD-EMISSION; FILMS; MICROPLATES; NANOBELTS; NANORODS; NIOBIUM DISELENIDE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.2634

Publication date: October 1, 2010

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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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