title: Electrical transport through single-wall carbon nanotube-anodic aluminum oxide-aluminum heterostructures.
abstract: Aluminum foils were anodized in sulfuric acid solution to form thick porous anodic aluminum oxide (AAO) films of thickness approximately 6 microm. Electrodes of carboxyl-functionalized single-wall carbon nanotube (SWCNT) thin films were inkjet printed on the anodic oxide layer and the electrical characteristics of the as-obtained SWCNT-AAO-Al structures were studied. Nonlinear current-voltage transport and strong temperature dependence of conduction through the structure was measured. The microstructure and chemical composition of the anodic oxide layer was analyzed using transmission and scanning electron microscopy as well as x-ray photoelectron spectroscopy. Schottky emission at the SWCNT-AAO and AAO-Al interfaces allowed by impurity states in the anodic aluminum oxide film together with ionic surface conduction on the pore walls of AAO gives a reasonable explanation for the measured electrical conduction. Calcined AAO is proposed as a dielectric material for SWCNT-field effect transistors.
authors: Department of Electrical and Information Engineering, University of Oulu, Finland. jarmo.kukkola@ee.oulu.fi
authors: Jarmo
authors: J
authors: Kukkola
authors: Aatto
authors: A
authors: Rautio
authors: Giovanni
authors: G
authors: Sala
authors: Flavio
authors: F
authors: Pino
authors: Géza
authors: G
authors: Tóth
authors: Anne-Riikka
authors: AR
authors: Leino
authors: Jani
authors: J
authors: Mäklin
authors: Heli
authors: H
authors: Jantunen
authors: Antti
authors: A
authors: Uusimäki
authors: Krisztián
authors: K
authors: Kordás
authors: Eduardo
authors: E
authors: Gracia
authors: Mauricio
authors: M
authors: Terrones
authors: Andrey
authors: A
authors: Shchukarev
authors: Jyri-Pekka
authors: JP
authors: Mikkola