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arXiv 1906.07577cond-mat.mes-hallcond-mat.mtrl-sci
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MoS2纳米花的场发射特性

Field Emission Characterization of MoS2 Nanoflowers

Filippo Giubileo, Alessandro Grillo, Maurizio Passacantando, Francesca Urban, Laura Iemmo, Giuseppe Luongo, Aniello Pelella, Melanie Loveridge, Luca Lozzi, Antonio Di Bartolomeo

摘要:

纳米结构材料由于其高的纵横比而具有作为场致发射体的广泛的潜在应用。我们在铜箔上水热合成了MoS 2纳米花,并通过应用尖端阳极配置来表征其场发射性能,其中曲率半径为30- 100 nm的钨尖端已被用作阳极,以测量从小面积到1- 100 μ m 2的局部特性。我们证明了二硫化钼纳米花可以与其他成熟的场发射体竞争。事实上,我们表明,一个稳定的场发射电流可以测量与低至12 V μ m-1的开启场和场增强因子高达880在600 nm的阴极-阳极分离距离。

英文摘要:

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 30-100nm has been used as the anode to measure local properties from small areas down to 1-100um2. 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 um-1 and a field enhancement factor up to 880 at 600nm cathode-anode separation distance.

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