The relationship between optical gap and chemical composition in SbxSe1−x system

Far-infrared study of amorphous Ge0.17Se0.83−xSbx chalcogenide glasses

“…The absorption band near 250-260 cm −1 in the spectra corresponds well to the value of 250 cm −1 calculated by Somayayulu [33]. As the amount of Sb goes on increasing heteropolar Se-Sb bonds starts forming on the expense of Se-Se bonds [34]. So formation of Se-Sb bonds reduces the average energy of the system which consequently supports the decrease in optical band gap [29].…”

Glass transition and crystallization kinetics of Inx(Se0.75Te0.25)100−x chalcogenide glasses

“…In most cases, the heat of formation of chalcogenide glasses is unknown. In the few materials for which it is known, its value does not exceed 10% of the heat of atomization and therefore can be neglected [53,54]. Hence, H s (A − B) is given quite well by…”

Effect of Te additions on the glass transition and crystallization kinetics of (Sb15As30Se55)100−xTex amorphous solids

“…In most cases, the heat of formation of chalcogenide glasses is unknown. In the few materials for which it is known, its value does not exceed 10% of the heat of atomization and therefore can be neglected [34,35]. Hence, H s (A − B) is given quite well by…”