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Silver Makes Better Electrical Contacts to Thiol‐Terminated Silanes than Gold

Li, Haixing ; Su, Timothy A. ; Camarasa‐Gómez, María ; Hernangómez‐Pérez, Daniel ; Henn, Simon E. ; Pokorný, Vladislav ; Caniglia, Caravaggio D. ; Inkpen, Michael S. ; Korytár, Richard ; Steigerwald, Michael L. ; Nuckolls, Colin ; Evers, Ferdinand ; Venkataraman, Latha

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Abstract

We report that the single‐molecule junction conductance of thiol‐terminated silanes with Ag electrodes are higher than the conductance of those formed with Au electrodes. These results are in contrast to the trends in the metal work function Φ(Ag)<Φ(Au). As such, a better alignment of the Au Fermi level to the molecular orbital of silane that mediates charge transport would be expected. This ...

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