Electrochemical and electrical behavior of (111)-oriented Si surfaces alkoxylated through oxidative activation of Si-H bonds

Joel A. Haber, Iver Lauermann, David Michalak, Thomas P. Vaid, Nathan S Lewis

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

The reaction chemistry of H-terminated (111)-oriented Si surfaces has been explored in the presence of one-electron oxidants in alcohol solvents. Similar chemistry was observed for Si surfaces exposed to methanolic solutions of ferrocenium tetrafluoroborate or to methanolic solutions of I2, as well as for Si electrodes that were subjected to anodic electrochemical oxidation processes in methanol. Oxidation in alcohols activates the surficial Si-H bond toward nucleophilic attack, producing alkoxylated surfaces. This mechanism for Si-H activation is supported by infrared spectroscopy, temperature-programmed desorption spectroscopy, and by X-ray photoelectron spectroscopic studies of this system. These data explain a variety of observations regarding the surface chemistry and electrochemistry of Si electrodes and surfaces.

Original languageEnglish
Pages (from-to)9947-9950
Number of pages4
JournalJournal of Physical Chemistry B
Volume104
Issue number43
Publication statusPublished - Nov 2 2000

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Chemical activation
activation
chemistry
Alcohols
alcohols
Electrodes
Electrochemical oxidation
Anodic oxidation
Electrochemistry
Temperature programmed desorption
Photoelectrons
Surface chemistry
Oxidants
electrodes
electrochemical oxidation
Methanol
Infrared spectroscopy
electrochemistry
attack
Spectroscopy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Engineering(all)

Cite this

Electrochemical and electrical behavior of (111)-oriented Si surfaces alkoxylated through oxidative activation of Si-H bonds. / Haber, Joel A.; Lauermann, Iver; Michalak, David; Vaid, Thomas P.; Lewis, Nathan S.

In: Journal of Physical Chemistry B, Vol. 104, No. 43, 02.11.2000, p. 9947-9950.

Research output: Contribution to journalArticle

Haber, Joel A. ; Lauermann, Iver ; Michalak, David ; Vaid, Thomas P. ; Lewis, Nathan S. / Electrochemical and electrical behavior of (111)-oriented Si surfaces alkoxylated through oxidative activation of Si-H bonds. In: Journal of Physical Chemistry B. 2000 ; Vol. 104, No. 43. pp. 9947-9950.
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