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Some optical specificity of ultrathin crystalline films |
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| Authors: | Branko Markoski Ana J Šetrajčić-Tomić Dragana Rodić Igor J Šetrajčić Svetlana Pelemiš Jovan P Šetrajčić |
| Institution: | 1. University of Novi Sad, Technical Faculty “M. Pupin” Zrenjanin, ?. ?akovi?a bb, 23000 Zrenjanin, Vojvodina, Serbia;2. University of Novi Sad, Faculty of Medicine, Department of Pharmacy, Hajduk Veljkova 3, 21000 Novi Sad, Vojvodina, Serbia;3. University of Novi Sad, Faculty of Sciences, Department of Physics, Trg D. Obradovi?a 4, 21000 Novi Sad, Vojvodina, Serbia;4. University of East Sarajevo, Faculty of Technology, Zvornik, Karakaj bb, 75400 Zvornik, Republic of Srpska, Bosnia and Herzegovina |
| Abstract: | The changes of optical properties under boundary presence in molecular crystal nanofilm were theoretically investigated in this work. The dispersion law and states of excitons as well as their space distribution along boundary direction have been determined using adjusted Green's function method and also by combined analytical and numerical calculations. On the basis of real and imaginary part of relative permittivity, both absorption and refraction indices were determined, and the influences of boundary parameters on occurrence of a very selective and strictly discrete absorption were analyzed. |
| Keywords: | Ultrathin film Excitons Dispersion law |
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