Giubileo Filippo, Grillo Alessandro, Passacantando Maurizio, Urban Francesca, Iemmo Laura, Luongo Giuseppe, Pelella Aniello, Loveridge Melanie, Lozzi Luca, Di Bartolomeo Antonio
CNR-SPIN Salerno, via Giovanni Paolo II n. 132, 84084 Fisciano, Italy.
Physics Department "E. R. Caianiello", University of Salerno, via Giovanni Paolo II n. 132, 84084 Fisciano, Italy.
Nanomaterials (Basel). 2019 May 9;9(5):717. doi: 10.3390/nano9050717.
Nanostructured materials have wide potential applicability as field emitters due to their high aspect ratio. We hydrothermally synthesized MoS 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 µm. We demonstrate that MoS 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.
由于其高纵横比，纳米结构材料作为场发射体具有广泛的潜在适用性。我们在铜箔上通过水热法合成了MoS纳米花，并通过采用尖端-阳极配置来表征其场发射特性，在该配置中，曲率半径低至30-100 nm的钨尖端被用作阳极，以测量小至1-100 µm区域的局部特性。我们证明MoS纳米花可以与其他成熟的场发射体相竞争。事实上，我们表明，在阴极-阳极分离距离为0.6 µm时，开启场低至12 V/μm，场增强因子高达880，能够测量到稳定的场发射电流。
