Rectification behaviour of molecular layers on Si(111)

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Reproducible and strong diode-like behaviour is observed for molecular films of 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) on n-type Si(111)- 7×7 surfaces studied by scanning tunnelling microscopy (STM) and spectroscopy (STS) at 77 K. The mechanism behind the rectification is likely to be related to the electron distribution at the molecule-silicon interface. We suggest that the adsorption of the molecular layer profoundly modifies the electronic structure of the Si(111)- 7×7 surface.
Original languageUndefined
Pages (from-to)645-648
Number of pages4
JournalSolid state communications
Issue number12
Publication statusPublished - 2007


  • METIS-239913
  • IR-73059

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