abstract
A new atomic layer deposition (ALD) process was applied for the homogeneous coating of carbon nanotubes with vanadium oxide. It permits the coating of the inner and outer surface with a highly conformal film of controllable thickness and, hence, the production of high surface area hybrid materials at a so far unprecedented quality. The ALD-coated tubes are used as active component in gas-sensing devices. They show electric responses that are directly related to the peculiar structure, i.e., the p-n heterojunction formed between the support and the film.
keywords
METAL-OXIDE; GAS SENSORS; THIN-FILMS; NONAQUEOUS SYNTHESIS; OXYGEN; ADSORPTION; ROUTES; NANOPARTICLES; TEMPERATURE; BUNDLES
subject category
Chemistry; Science & Technology - Other Topics; Materials Science; Physics
authors
Willinger, MG; Neri, G; Rauwel, E; Bonavita, A; Micali, G; Pinna, N
our authors
Nicola Pinna
ResearcherGroups
Projects
Synthesis and characterization of multiferroic nanostructures synthetised via novel non-aqueous sol-gel routes (PTDC/CTM/65667/2006)
Functionalised Advanced Materials and Engineering of Hybrids and Ceramics - FAME (FAME)
acknowledgements
We thank Dr. Dangsheng Su and Rosa Arrigo from the Fritz Haber Institute of the Max Planck Society, Berlin, Germany, for supplying carbon nanotubes. Financial support from FCT project (PTDC/CTM/65667/2006), FAME network of excellence, and Marie Curie (MEIF-CT2006-041632) is acknowledged. C