Abstract
A controversy in molecular electronics is the unexplained large spread in values of the tunneling decay coefficient β in tunneling junctions with self‐assembled monolayers of n‐alkanethiolates (SCn). We show control of the β value over the range 0.4–1.0 nC−1 in junctions by changing the topography of the bottom electrodes that support the SAMs. Very low β values (0.4–0.5 nC−1) are obtained for rough surfaces with large areas of exposed grain boundaries, while β=1.0 nC−1 for smooth surfaces with small areas of exposed grain boundaries.
Original language | English |
---|---|
Pages (from-to) | 3377-3381 |
Journal | Angewandte Chemie (international edition) |
Volume | 53 |
Issue number | 13 |
DOIs | |
Publication status | Published - 24 Mar 2014 |
Externally published | Yes |
Keywords
- bottom electrodes
- charge transport
- molecular electronics
- self-assembled monolayers
- tunneling decay constant