Advanced

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

Davila, M. E.; Marele, A.; De Padova, P.; Montero, I.; Hennies, Franz LU ; Pietzsch, Annette LU ; Shariati, M. N.; Gomez-Rodriguez, J. M. and Le Lay, G. (2012) In Nanotechnology 23(38).
Abstract
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nanotechnology
volume
23
issue
38
publisher
IOP Publishing
external identifiers
  • wos:000308813100023
  • scopus:84866116825
ISSN
0957-4484
DOI
10.1088/0957-4484/23/38/385703
language
English
LU publication?
yes
id
2e953225-72ed-4537-9e94-22fa41e9a973 (old id 3187526)
date added to LUP
2012-12-06 12:10:02
date last changed
2017-01-01 03:13:15
@article{2e953225-72ed-4537-9e94-22fa41e9a973,
  abstract     = {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.},
  articleno    = {385703},
  author       = {Davila, M. E. and Marele, A. and De Padova, P. and Montero, I. and Hennies, Franz and Pietzsch, Annette and Shariati, M. N. and Gomez-Rodriguez, J. M. and Le Lay, G.},
  issn         = {0957-4484},
  language     = {eng},
  number       = {38},
  publisher    = {IOP Publishing},
  series       = {Nanotechnology},
  title        = {Comparative structural and electronic studies of hydrogen interaction with isolated versus ordered silicon nanoribbons grown on Ag(110)},
  url          = {http://dx.doi.org/10.1088/0957-4484/23/38/385703},
  volume       = {23},
  year         = {2012},
}