Composition dependence of physical and optical properties in Ge-As-S chalcogenide glasses
2016
Abstract The composition dependence of density ( d ), refractive index ( n ) and optical bandgap ( E g ) of Ge-As-S chalcogenide glasses is investigated. It is shown that d correlates linearly with sulfur content but relatively poorly with the mean coordination number (MCN). It is also shown that n does not correlate directly with d , and instead a semi-empirical relation based on the molar refractivity ( R ) of Ge, As and S is derived, permitting to predict n from d with E g of Ge-As-S glasses with good accuracy. It is shown that the value of E g is dominated by the S content. These findings make it convenient to tailor the physical and optical properties of glasses in Ge-As-S system.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
28
References
38
Citations
NaN
KQI