Comparative structural and electronic studies of hydrogen interaction with isolated versus ordered silicon nanoribbons grown on Ag(110)

M. E. Davila, A. Marele, P. De Padova, I. Montero, Franz Hennies, Annette Pietzsch, M. N. Shariati, J. M. Gomez-Rodriguez, G. Le Lay

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

38 Citeringar (SciVal)

Sammanfattning

We have investigated the geometry and electronic structure of two different types of self-aligned silicon nanoribbons (SiNRs), forming either isolated SiNRs or a self-assembled 5 x 2/5 x 4 grating on an Ag(110) substrate, by scanning tunnelling microscopy and high resolution x-ray photoelectron spectroscopy. At room temperature we further adsorb on these SiNRs either atomic or molecular hydrogen. The hydrogen absorption process and hydrogenation mechanism are similar for isolated or 5 x 2/5 x 4 ordered SiNRs and are not site selective; the main difference arises from the fact that the isolated SiNRs are more easily attacked and destroyed faster. In fact, atomic hydrogen strongly interacts with any Si atoms, modifying their structural and electronic properties, while molecular hydrogen has first to dissociate. Hydrogen finally etches the Si nanoribbons and their complete removal from the Ag(110) surface could eventually be expected.
Originalspråkengelska
Artikelnummer385703
TidskriftNanotechnology
Volym23
Utgåva38
DOI
StatusPublished - 2012

Ämnesklassifikation (UKÄ)

  • Nanoteknik

Fingeravtryck

Utforska forskningsämnen för ”Comparative structural and electronic studies of hydrogen interaction with isolated versus ordered silicon nanoribbons grown on Ag(110)”. Tillsammans bildar de ett unikt fingeravtryck.

Citera det här