Organized growth of carbon nanotubes on Fe-doped alumina ceramic substrates

Ender Suvaci (1) , Yasemin Çelik (1) , Alicia Weibel (2) , Alain Peigney (2) , Emmanuel Flahaut (2)

1 Anadolu Üniversitesi (TURKEY)
2 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux

Polycrystalline Fe-doped alumina (Al2O3) ceramics have been produced and used as a substrate for organized carbon nanotubes (CNTs) growth by catalytic chemical vapor deposition (CCVD). In these substrates, Fe3+ cations, which are the catalyst source, are initially substituted to Al3+ in a-Al2O3, instead of being simply deposited as a thin Fe layer on the surface of the substrate. The selective reduction of these substrates resulted in in situ formation of homogeneously distributed Fe nanoparticles forming patterns at nanometerscale steps and kinks. These nanoparticles then catalyzed the growth of high quality CNTs, with some degree of organization thanks to their interaction with the topography of the substrate.

Mots clés: Carbon nanotubes; CCVD; Alumina

Domaines: Matériaux; Micro et nanotechnologies/Microélectronique

Ender Suvaci, Yasemin Çelik, Alicia Weibel, Alain Peigney, Emmanuel Flahaut. Organized growth of carbon nanotubes on Fe-doped alumina ceramic substrates. Carbon, 2012, vol. 50, pp. 3092-3095. ⟨10.1016/j.carbon.2012.02.034⟩. ⟨hal-00857439⟩