Electrochemical grafting of octyltrichlorosilane monolayer on Si

Electrochemical grafting of octyltrichlorosilane monolayer on Si

The octyltrichlorosilane (OTS) monolayer on hydrated Si (111) surfaces has been grafted by cyclic voltammetry (CV) using tetrabutylammonium perchlorate in dry methanol as supporting electrolyte. The percentage of OTS coverage, calculated from the current value at − 1 V , after 30 CV scans was found...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Applied physics letters 2007-03, Vol.90 (11), p.113118-113118-3
Hauptverfasser: Koiry, S. P., Aswal, D. K., Saxena, Vibha, Padma, N., Chauhan, A. K., Joshi, N., Gupta, S. K., Yakhmi, J. V., Guerin, D., Vuillaume, D.
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The octyltrichlorosilane (OTS) monolayer on hydrated Si (111) surfaces has been grafted by cyclic voltammetry (CV) using tetrabutylammonium perchlorate in dry methanol as supporting electrolyte. The percentage of OTS coverage, calculated from the current value at − 1 V , after 30 CV scans was found to be > 97 % , which is independently confirmed by atomic force microscopy. A mechanism of electrochemical grafting of OTS on Si via formation of Si-Si bonds is proposed. Current-voltage characteristics and impedance spectroscopic measurements on Al/OTS/Si structures reveal realization of a true OTS/Si interface.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2713343