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This paper reports the spectroscopic studies on the thermally evaporated Sn x Sb 20 Se 80−x (2≤x≤8) films. Optical gap and band tailing parameter decreases except for x=8, where it increases. The red shift in peak reflectivity spectrum in the interband transition region (200–800nm) has been observed. The position and shape of the reflectivity bands (80–378cm −1...
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