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https://open.uns.ac.rs/handle/123456789/15060
Title: | Selective absorption in symmetric molecular nano-films | Authors: | Pelemiš S. Škipina B. Vučenović, Sonja Mirjanić D. Šetrajčić J. |
Issue Date: | 19-Sep-2008 | Journal: | "2008 26th International Conference on Microelectronics, Proceedings, MIEL 2008" | Abstract: | A microscopic theory of dielectric properties of symmetrical ultrathin molecular films, was formulated in bosonic and nearest-neighbor approximation. The dispersion law of harmonic exciton states were calculated using the method of two-time, temperature dependent Green's functions. It has been shown that two types of excitations can be occur: bulk and surface exciton states. Exciton spectral weights and space distribution along the direction of broken symmetry were analyzed as well. Calculating dynamical permittivity by the single-pole Green's functions it was shown that the threshold of light absorption can be moved along frequencies, changing the film thickness and the intensity of boundary perturbations. This can give a great contribution to practical ultrathin film engineering. © 2008 IEEE. | URI: | https://open.uns.ac.rs/handle/123456789/15060 | ISBN: | 9781424418824 | DOI: | 10.1109/ICMEL.2008.4559239 |
Appears in Collections: | EF Publikacije/Publications |
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