6533b7cffe1ef96bd12583fb

RESEARCH PRODUCT

Carbon nanotube field-effect devices with asymmetric electrode configuration by contact geometry

D. TalukdarPeerapong YotprayoonsakMarkus Ahlskog

subject

Working electrodeMaterials scienceta114oxidationhiilinanoputketContact geometryelektroditohmic contactsGeneral Physics and Astronomychemistry.chemical_elementField effectNanotechnologyCarbon nanotubepalladiumkultalaw.inventionhappichemistrylawPalladium-hydrogen electrodeElectrodeComposite materialContact areata116Palladium

description

We have studied experimentally the conductive properties of single walled carbon nanotube (SWNT) based field-effect type devices, with different contact geometries at the connecting electrode. The device designs are asymmetric with one end of the SWNT having the metal electrode deposited on top and immersing it, while at the other end, the SWNT is on top of the electrode. The devices were made with either gold or palladium as electrode materials, of which the latter resulted in different behavior of the different contact types. This is argued to be caused by the existence of a thin insulating layer of surface adsorbents on the palladium, possibly Pd5O4, the effect of which is enhanced by the 1D nature of the contact area in the configuration with SWNT on top of electrode. peerReviewed

10.1063/1.4880955http://juuli.fi/Record/0028703114