Show simple item record Kumar, P. Sathiaraj, T.S. Thangaraj, R. 2010-07-13T12:33:41Z 2010-07-13T12:33:41Z 2010
dc.identifier.citation Kumar, P. et al (2010) Optical properties of amorphous Sb2Se3:Sn films, Philosophical Magazine Letters, Vol. 90, No. 3, pp. 183-192 en_US
dc.identifier.issn 0950-0839 (print)
dc.identifier.issn 1362-3036 (online)
dc.description.abstract The measurements and analysis of optical transmission and far-infrared (IR) reflectivity spectra of thermally evaporated Sb2Se3:Sn films are reported. The refractive index and film thickness have been determined from the upper and lower envelopes of the transmission spectra (Swanepoel’s standard envelope method), measured at normal incidence, in the spectral range from 800 to 2500 nm. Values of the refractive index fit well to Cauchy’s dispersion relation. The optical gap decreases with an increase in the Sn content, while a maximum in the tailing parameter and Urbach’s energy occurs with only a small amount ( 1 at %) of this additive. Characteristic vibrational bands for SbSe3 structural units are revealed in the far-IR spectrum with no additional ones arising from the Sn additive. The Kramers–Kronig analysis has been used to calculate the dielectric constants and hence the longitudinal optic and transverse optic splitting for various compositions. The inclusion of Sn as a charged entity along with the Coulomb interactions which serve to polarize the glass medium is found to be responsible for these results. en_US
dc.language.iso en en_US
dc.publisher Taylor & Francis en_US
dc.subject Amorphous semiconductors en_US
dc.subject Thin films en_US
dc.subject Chalcogenide glasses en_US
dc.subject Optical properties en_US
dc.subject Refractive index en_US
dc.subject Far-infrared reflectivity en_US
dc.title Optical properties of amorphous Sb2Se3:Sn films en_US
dc.type Published Article en_US en_US

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