Molecularly Tunable "Organic Capacitors" at Silicon/Aqueous Electrolyte Interfaces1

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DOIResolve DOI: http://doi.org/10.1021/jp0014768S1089-5647(00)01476-0
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TypeArticle
Journal titleJournal Of Physical Chemistry B - Condensed Phase
ISSN15206106
Volume104
Issue47
Pages1115711161; # of pages: 5
AbstractRobust and uniform n-alkyl monolayers were formed on silicon from the reaction of Grignard regents (n-CnH2n+1MgBr, n = 2, 6, 10, and 15) with hydrogen-terminated Si(111). The capacitive properties of these organic thin films on silicon in contact with aqueous electrolytes were evaluated by electrochemical impedance measurements. In particular, the reciprocal capacitance of the organic thin film modified silicon/aqueous electrolyte interfaces is proportional to the film thickness, which is tunable by simply varying the alkyl chain length. The derived dielectric constant of these organic thin films from the best fit of the reciprocal capacitance vs ellipsometric film thickness plot is = 3.3 ? 0.6.
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AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
Identifier18077705
NPARC number12330753
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Record identifier040a5a93-00d3-42be-8e1b-8f6f748f6974
Record created2009-09-10
Record modified2016-05-09
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