Selective absorption in symmetric molecular nano-films
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...
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| creator | Pelemis, S.S. Skipina, B. Vucenovic, S.M. Mirjanie, D.L. Setrajcie, J.P. |
| description | 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. |
| doi_str_mv | 10.1109/ICMEL.2008.4559239 |
| format | Conference Proceeding |
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| ispartof | 2008 26th International Conference on Microelectronics, 2008, p.125-128 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Absorption Crystallization Dielectrics Electronic components Equations Excitons Green's function methods Microelectronics Microscopy Permittivity |
| title | Selective absorption in symmetric molecular nano-films |
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