Characterizing the Metal–SAM interface in tunneling junctions
| Autor: | Benjamin Breiten, George M. Whitesides, Kung-Ching Liao, Carleen M. Bowers, Dmitrij Rappoport, Anna Krzykawska, Piotr Cyganik, Tomasz Zaba, Mostafa Baghbanzadeh |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
molecular electronics General Engineering EGaIn General Physics and Astronomy Molecular electronics Nanotechnology Self-assembled monolayer alkynes charge transport Metal chemistry.chemical_compound Crystallography Acetylene chemistry self-assembled monolayer visual_art Electrode visual_art.visual_art_medium General Materials Science Carboxylate Current density Quantum tunnelling |
| Popis: | This paper investigates the influence of the interface between a gold or silver metal electrode and an n-alkyl SAM (supported on that electrode) on the rate of charge transport across junctions with structure Met(Au or Ag)(TS)/A(CH2)nH//Ga2O3/EGaIn by comparing measurements of current density, J(V), for Met/AR = Au/thiolate (Au/SR), Ag/thiolate (Ag/SR), Ag/carboxylate (Ag/O2CR), and Au/acetylene (Au/C≡CR), where R is an n-alkyl group. Values of J0 and β (from the Simmons equation) were indistinguishable for these four interfaces. Since the anchoring groups, A, have large differences in their physical and electronic properties, the observation that they are indistinguishable in their influence on the injection current, J0 (V = 0.5) indicates that these four Met/A interfaces do not contribute to the shape of the tunneling barrier in a way that influences J(V). |
| Databáze: | OpenAIRE |
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