Temperature-dependent electronic transport through alkyl chain monolayers: Evidence for a molecular signature

Adi Salomon, Hagay Shpaisman, Oliver Seitz, Till Boecking, David Cahen

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

Temperature-dependent transport measurements through alkyl chain monolayers that are directly chemically bound to Si, show that the currents decrease as the temperature increases. We relate this temperature dependence primarily to a gradual un-tilting of the adsorbed molecules, which leads to increasing of the film thickness, resulting in a wider tunnel barrier. Following that, we conclude that a significant part of transport through these alkyl chain monolayers occurs "through space". The experimental finding and its interpretation result from the high reproducibility and accuracy of the transport results for the semiconductor/alkyl chain/metal junctions that we study.

Original languageEnglish
Pages (from-to)3969-3974
Number of pages6
JournalJournal of Physical Chemistry C
Volume112
Issue number10
DOIs
StatePublished - 13 Mar 2008
Externally publishedYes

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