Role of Silicon Nanowire Diameter for Alkyl (Chain Lengths C1-C18) Passivation Efficiency through Si-C Bonds Academic Article uri icon

abstract

  • The effect of silicon nanowire (Si NW) diameter on the functionalization efficiency as given by covalent Si–C bond formation is studied for two distinct examples of 25±5 and 50±5 nm diameters (Si NW25 and Si NW50, respectively). A two-step chlorination/alkylation process is used to connect alkyl chains of various lengths (C1–C18) to thinner and thicker Si NWs. The shorter the alkyl chain lengths, the larger the surface coverage of the two studied Si NWs. Increasing the alkyl chain length (C2–C9) changes the coverage on the NWs: while …

publication date

  • February 19, 2015