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Field emission characterization of MoS2 nanoflowers

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Giubileo, Filippo, Grillo, Alessandro, Passacantando, Maurizio, Urban, Francesca, Iemmo, Laura, Luongo, Giuseppe, Pelella, Aniello, Loveridge, Melanie, Lozzi, Luca and Di Bartolomeo, Antonio (2019) Field emission characterization of MoS2 nanoflowers. Nanomaterials, 9 (5). 717. doi:10.3390/nano9050717

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Official URL: http://dx.doi.org/10.3390/nano9050717

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Abstract

Nanostructured materials have wide potential applicability as field emitters due to their high aspect ratio. We hydrothermally synthesized MoS2 nanoflowers on copper foil and characterized their field emission properties, by applying a tip-anode configuration in which a tungsten tip with curvature radius down to 30–100 nm has been used as the anode to measure local properties from small areas down to 1–100 µm2. We demonstrate that MoS2 nanoflowers can be competitive with other well-established field emitters. Indeed, we show that a stable field emission current can be measured with a turn-on field as low as 12 V/μm and a field enhancement factor up to 880 at 0.6 μm cathode–anode separation distance.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Molybdenum disulfide, Nanotechnology, Nanostructured materials, Transition metal compounds, Chalcogenides, Field emission
Journal or Publication Title: Nanomaterials
Publisher: MDPI Publishing
ISSN: 1847-9804
Official Date: 9 May 2019
Dates:
DateEvent
9 May 2019Published
6 May 2019Accepted
Date of first compliant deposit: 2 October 2020
Volume: 9
Number: 5
Article Number: 717
DOI: 10.3390/nano9050717
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access

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