Optical properties and local structure of (As2S3)100-x(SbSI)x glasses

We report experimental results for the spectral dependences of the optical absorption edge in (As 2 S 3 ) 100-x (SbSI) x (0 ≤ x ≤ 90) glasses.Our studies have shown that increasing of antimony sulfoiodide (SbSI) content in the glass composition and the temperature increase lead to shift in the absorption edge towards long-wavelength range.The optical absorption edge α g E positions are determined.The slope change observed for the absorption edge in the temperature range of T g ÷ T c is conditioned by generation of nanocrystals of antimony sulfoiodide in the glassy matrix.