Micro- and nanocrystalline, porous, composite semiconductors

Spectra of optical parameters in bulk and film amorphous alloys of the Se$_{95}$As$_5$ system containing samarium (Sm) impurities

N. Z. Dzhalilov, G. M. Damirov

Institute of Physics Azerbaijan Academy of Sciences

Abstract: Reflectance spectra of bulk and film amorphous alloys of the Se$_{95}$As$_5$ system containing samarium (Sm) impurities are studied in the energy range of 1–6 eV. Spectral dependences of optical constants and derivatives of optical dielectric functions are calculated by the Kramers-Kronig method. Changes in spectra of optical parameters depending on the content of impurities introduced into Se$_{95}$As$_5$ and conditions of their preparation are explained based on the cluster model. According to the latter, changes in the electron density of states depends on changes in atomic configurations in clusters, i.e., short-range order changes.

Received: 07.02.2011
Accepted: 14.02.2011

 English version: Semiconductors, 2011, 45:9, 1177–1182

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