Silicon nanowires terminated with methyl functionalities exhibit stronger Si-C bonds than equivalent 2D surfaces

Muhammad Y. Bashouti, Yair Paska, Sreenivasa Reddy Puniredd, Thomas Stelzner, Silke Christiansen, Hossam Haick

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Silicon nanowires (Si NWs) terminated with methyl functionalities exhibit higher oxidation resistance under ambient conditions than equivalent 2D Si(100) and 2D Si(111) surfaces having similar or 10-20% higher initial coverage. The kinetics of methyl adsorption as well as complementary surface analysis by XPS and ToF SIMS attribute this difference to the formation of stronger Si-C bonds on Si NWs, as compared to 2D Si surfaces. This finding offers the possibility of functionalising Si NWs with minimum effect on the conductance of the near-gap channels leading towards more efficient Si NW electronic devices.

Original languageEnglish
Pages (from-to)3845-3848
Number of pages4
JournalPhysical Chemistry Chemical Physics
Volume11
Issue number20
DOIs
StatePublished - 25 May 2009
Externally publishedYes

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