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.

Field Emission Characterization of MoS2 Nanoflowers

Giubileo, Filippo
Writing – Original Draft Preparation
;
Grillo, Alessandro
Investigation
;
Passacantando, Maurizio
Investigation
;
Urban, Francesca
Investigation
;
Iemmo, Laura
Investigation
;
Luongo, Giuseppe
Investigation
;
Pelella, Aniello
Investigation
;
Di Bartolomeo, Antonio
Writing – Review & Editing
2019-01-01

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4723772
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