Vacant Electronic States of Furan-Phenylene Co-Oligomer Films on the Surface of Molybdenum Oxide

Abstract The results of a study of the electronic states of the conduction band using total current spectroscopy of films of unsubstituted and fluorinated furan-phenylene co-oligomers on the MoO3 surface are presented. An analysis of the experimental results and the results of theoretical calculations using the density functional theory (DFT) method is carried out to establish the main maxima of the density of electronic states of the studied films in the energy range from 5 to 20 eV above the Fermi level. The maxima of the density of electronic states in the spectra from films of fluorine-substituted molecules are shifted relative to the similar maxima in the spectra from films of unsubstituted molecules by approximately 1 eV toward higher electron energy values.

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