Infrared studies of Se-based polynary chalcogenide glasses (III): Y xZ xS xSe 100−3 x (Y = Ge, As; Z = As, Te)

Abstract

The infrared (IR) absorption spectra for Y x Z x S x Se 100−3 x glasses (Y = Ge, As; Z = As, te), with x = 2.5 and 5.0, are measured in the wavenumber region 700-60 cm −1 at room temperature. These IR spectra are qualitatively explained by comparing with the IR spectra of the binary and ternary glasses. In Ge x As x S x Se 100−3 x glasses ( x ⩽ 5.0), the main spectral features are explained by both spectra of the two ternary glasses Ge x S x Se 100−2 x and As x S x Se 100−2 x . In Ge x S x Te x Se 100−3 x glasses ( x ⩽ 5.0), the main spectral features are well explained by both spectra of the two ternary glasses Ge x S x Se 100−2 x and Ge x Te x Se 100−2 x . On the other hand, main spectral features in As x S x Te x Se 100−3 x glasses ( x ⩽ 5.0) are well explained by both spectra of the ternary glasses As x S x Se 100−2 x and the binary glasses Se 100− x Te x . In these glasses with low concentrations ( x ⩽ 5.0) some chemical bonds are confirmed and some structural units estimated.