Nanotechnologies in Russia

, Volume 11, Issue 5–6, pp 331–336 | Cite as

Molecular diodes and negative differential resistances based on polyoxometalates

  • F. I. Dalidchik
  • S. A. Kovalevskii
  • E. M. Balashov
  • B. A. Budanov


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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Copyright information

© Pleiades Publishing, Ltd. 2016

Authors and Affiliations

  • F. I. Dalidchik
    • 1
  • S. A. Kovalevskii
    • 1
  • E. M. Balashov
    • 1
  • B. A. Budanov
    • 1
  1. 1.Semenov Institute of Chemical PhysicsRussian Academy of SciencesMoscowRussia

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