Abstract
By measuring the tunnel conductivity of polyoxometalates (POM) and their organic derivatives in experiments with a scanning tunnel microscope (STM), effects have been found which are promising for use in nanoelectronics. Large-scale multiple negative differential resistances (with record peak-to-valley ratios up to 102) have been observed under conditions which do not require low temperatures and high vacuum. The diode properties of organo-polyoxometalate complexes with coefficients of rectification up to 35–40 are revealed. A mechanism of biresonance tunnel electron transport in strong electric fields, which explains the effects, has been developed. A strategy for selecting nanomaterials which can improve the functional properties of molecular electronic elements based on the optimization of the composition and architecture of polyoxometalate complexes has been proposed.
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Original Russian Text © F.I. Dalidchik, S.A. Kovalevskii, E.M. Balashov, B.A. Budanov, 2016, published in Rossiiskie Nanotekhnologii, 2016, Vol. 11, Nos. 5–6.
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Dalidchik, F.I., Kovalevskii, S.A., Balashov, E.M. et al. Molecular diodes and negative differential resistances based on polyoxometalates. Nanotechnol Russia 11, 331–336 (2016). https://doi.org/10.1134/S1995078016030058
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DOI: https://doi.org/10.1134/S1995078016030058