Journal
SEMICONDUCTORS
Volume 49, Issue 7, Pages 949-952Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1063782615070040
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The transmission spectrum of a (SeTe5)-Te-95 chalcogenide glassy semiconductor doped with samarium (0.05, 0.1, 0.25, 0.5, and 1 at %) is studied; the Swanepoel method and the single-oscillator model are used to determine the oscillator energy E (0), dispersion energy E (d), optical width of the band gap E (g), and linear (n) and nonlinear (n (2)) refractive indices. The changes in the values of these parameters as a result of doping are attributed to modification of the local structure and to a change in the concentration of defect states.
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