JOURNAL ARTICLE

Effect of KI/AgI on the thermal and optical properties of the GeS₂-In₂S₃ chalcogenide glasses

Guoxiang Wang, Qiuhua Nie, Xunsi Wang, Fen Chen, Shixun Dai, Tiefeng Xu, Xiang Shen, Dagang Wang, Xin Lv
Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy 2010, 77 (4): 821-4
20800537
GeS₂-In₂S₃-KI/AgI chalcohalide glasses were prepared by traditional melt-quenching method and the glass-forming region was determined. The dependence of glass properties on composition as formula of (100 - x)(0.75GeS₂-0.25In₂S₃) - x(In₂S₃-KI/AgI) was investigated. The allowed indirect transition of samples was calculated according to the classical Tauc equation. The results show that 50 mol% AgI can be introduced in the glassy matrix while only 40 mol% of KI can be incorporated in the GeS₂-In₂S₃-KI glass system. GeS₂-In₂ S₃-AgI glass system has larger density, higher refractive index and better thermal stability, while GeS₂-In₂S₃-KI glass system has shorter visible cut-off wavelength and higher optical band gap.

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