Electrochemical Behavior of Methyl- and Butyl- Terminated Si(111) in Aqueous Solution

Formation of the methyl- and n-butyl monolayer on (Cl)–Si(111) surfaces by using the Grignard reaction and their electrochemical behavior was investigated. The modified Si(111) surfaces were indicated to be closely packed with a single moiety species. The methyl-modified Si(111) surface was composed of (1 × 1) adlattice structure. The methyl-modified surface was stable in aqueous solution, and showed essentially good electrical conductive property with p-n junction like behavior.