Electrical transport through single-wall carbon nanotube-anodic aluminum oxide-aluminum heterostructures

Jarmo Kukkola, Aatto Rautio, Giovanni Sala, Flavio Pino, Géza Tóth, Anne Riikka Leino, Jani Mäklin, Heli Jantunen, Antti Uusimäki, Krisztin Kords, Eduardo Gracia, Mauricio Terrones, Andrey Shchukarev, Jyri Pekka Mikkola

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Aluminum foils were anodized in sulfuric acid solution to form thick porous anodic aluminum oxide(AAO) films of thickness ∼6νm. 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.

Original languageEnglish (US)
Article number035707
Issue number3
StatePublished - 2010

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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