The electronic state of fullerenes doped by oxygen

• Published in: Thin solid films 2008-09, Vol.516 (21), p.7937-7941
• Main Authors: Dmytrenko, O.P., Kulish, N.P., Prylutskyy, Yu. I., Rodionova, T.V., Shatniy, T.D., Ritter, U., Carta-Abelmann, L., Scharff, P., Braun, T.
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Doping; Electrical properties of specific thin films; Electron structure; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Exact sciences and technology; Fullerene films; Fullerenes and related materials; diamonds, graphite; Luminescence; Materials science; Optical conductivity; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Photoluminescence; Physics; Specific materials; Surface and interface electron states; Surface states, band structure, electron density of states; Transfer of charges
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2008.05.051

The spectral studies of photoluminescence, refrative index ( n), coefficient of absorption ( k), components of dielectric constant ε, and optical conductivity σ in the С 60 films doped by oxygen with the varied conditions of annealing are carried out. The density of electronic states ( g( E)), transfer of charges (Δ Z), and optical conductivity ( σ( E)) for С 60 fullerenes in the fcc lattice, and also for some of their compounds with oxygen are calculated from the first principles. It is shown that for explaining the changes in the luminescence spectra and the optical conductivity of the above materials doped by oxygen it is necessary to consider two states, one of which corresponds the chemically bound, and another the intercalated oxygen molecules.