Si-C-bound alkyl chains on oxide-free Si: towards versatile solution preparation of electronic transport quality monolayers.
We show that electronic transport quality alkyl chain mono-layers can be prepared from dilute solution, rather than from neat alkanes, and on Si (100) instead of (111) surfaces. High monolayer quality was deduced from XPS and from comparing current-voltage curves of Hg/alkyl/Si junctions with those for junctions with monolayers made from neat alkanes. XPS shows that limited surface oxidation does not harm the integrity of the monolayer. Solution preparation significantly widens the range of molecules that can be used for transport studies.
Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel.
Avi
A
Lavi
Hagai
H
Cohen
Tatyana
T
Bendikov
Ayelet
A
Vilan
David
D
Cahen