Molecular rectification, photodiodes and symmetry
- 1 December 1996
- journal article
- Published by IOP Publishing in Nanotechnology
- Vol. 7 (4) , 401-405
- https://doi.org/10.1088/0957-4484/7/4/017
Abstract
We present a review of recent advances in the molecular rectifier project. Using a donor - -bridge - acceptor compound, specifically designed to be a molecular rectifier, drastically improved rectifier characteristics were observed compared with a previously published -bridged compound. In particular the increased `rectification ratio' of the -bridged compound was attributed to more effective current blocking under reverse bias. Furthermore, we demonstrate that photodiode-like properties are possessed by films of the zwitterionic, -bridged compound, - , using a transparent electrode construction. Finally, we provide an explanation for the observation that all non-centrosymmetric Langmuir - Blodgett film samples exhibit an exponential current-density/voltage dependence.Keywords
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