Growth, Optical, and Field Emission Properties of Aligned CdS Nanowires

Abstract

Here, we demonstrate the synthesis of aligned CdS nanowires by a solvothermal process where the alignment of the nanowires was controlled by tuning the reaction conditions. The normal and photoassisted field emission properties of the aligned CdS nanowires were studied. The turn-on field is found to be 0.68 V/μm which is much lower than the reported values. From the I-t plot, it is shown that the emission current remains nearly constant over 4 h at preset current value of 5 μA. Upon illumination, the photofield emission current shows a reproducible switching property with a rise in the current level of almost 50% of the initial value. The field emission properties indicate promising applications in field emission based devices.

One-dimensional II–VI nanostructures: Synthesis, properties and optoelectronic applications

“…Aligned CdS NW arrays were grown on Cd foils by solvothermal process [82] or liquid reaction route [83]. As for CdS NRs, since Dong et al synthesized CdS NRs on tungsten substrates by using CdS powder as the source material [84], multifarious methods have been developed to grow CdS NRs.…”

Photo-enhanced field emission study of TiO2 nanotubes array

“…TiO 2 nanotubes array can be one of the candidates for field emission investigations. It is known that aligned nanostructures with a high packing density can significantly enhance FE property of the materials [8].…”

Field Emission from Nanowires

“…The MoO 3 nanowires and nanobelt structures have been studied by Zhou et al (Zhou, 2003). One dimensional chalcogenides nanowires have proved to be significant for their novel physical properties and in particular, field emission properties (Datta, 2009). Fig.…”