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Amorphous thin films of Se 80-x Te 20 Pb x (0<x<2) have been prepared by thermal evaporation method. The effect of 40 MeV 28 Si 5+ ion irradiation on the optical band gap (E g ) has been investigated. Blue shift in the optical band gap of Se 80-x Te 20 Pb x (0<x<2)...
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