Silicon adsorption in single walled nanotubes

M. L. Colussi, L.P. Neves, R.J. Baierle
2006 Brazilian journal of physics  
Using density functional (DF) calculations and Monte Carlo (MC) simulations we have investigated the main electronic and structural properties of silicon interacting with single walled carbon nanotubes. We have investigated the silicon adsorption externally and internally in the nanotubes surface. The total energies calculations and charge density plot present that the adsorption is most stable externally with silicon forming four bonds with the C atoms and the Si-C bond distances are similar
more » ... ances are similar to the ones in the SiC crystal. When silicon is adsorbed in a semiconductor nanotube, a new occupied electronic level inside the band gap is observed. For the metallic tube, the electronic silicon levels are close to the Fermi energy, increasing the metallic tube character.
doi:10.1590/s0103-97332006000600023 fatcat:lifurwl5mrhzbkd2anoplykxcm