Journal
OPTICAL MATERIALS
Volume 33, Issue 11, Pages 1753-1759Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2011.06.009
Keywords
Thin films; Antimony triiodide; Anisotropic materials; Optical parameters; Spectrogoniometry
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Optical parameters of platelets of crystalline antimony triiodide (SbI3) have been evaluated using spectrogoniometric interference spectroscopy technique. Spectral characteristics of real parts of refractive indices of radiation with electric vector normal and parallel to the optical c-axis of SbI3 crystalline platelets (i.e. n(o), n(e) - refractive indices for ordinary and extraordinary rays) have been shown. The temperature dependences of spectra of optical parameters (no and absorption coefficient of radiation with electric vector normal to the optical c-axis) have been presented. The temperature dependences of fitted optical indirect allowed energy gap of SbI3, Urbach energy and phonons energies are the main findings of the presented work. The obtained results have been compared with literature data. (C) 2011 Elsevier B.V. All rights reserved.
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