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Title: | Dielectric properties of molecular crystalline films | Authors: | Vučenović, Sonja Šetrajčić J. Pelemiš S. Tošić B. Mirjanić D. |
Issue Date: | 1-Jan-2004 | Journal: | Proceedings of the International Conference on Microelectronics | Abstract: | A microscopic theory of dielectrical properties of thin 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 permitivity 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. | URI: | https://open.uns.ac.rs/handle/123456789/12853 |
Appears in Collections: | EF Publikacije/Publications |
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