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STM Study on the Rectifying Performance of Molibdo-Vanadophosphate Polyanions

DOI: 10.4236/snl.2014.42004, PP. 24-30

Keywords: STM, Molecular Diodes, Heteropolyoxometalates, Rectifiers

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Abstract:

Scanning tunneling spectroscopy (STS) was used for investigation of rectification properties of molecules with spatial asymmetry. The molecules of cetyltrimethylammonium derivatives of 10-molibdo-2-vanadophosphate-anions [PMo10V2O40]﹣5 (CTMVA) were adsorbed on a surface of pyrolytic graphite (HOPG). Consequently, both good diode properties and J(V)-curves reproducibility of the film were revealed. The validity of the single-level model for the evaluation of the system parameters is discussed.

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