Composition dependence of physical and optical properties in Ge-As-S chalcogenide glasses

Yan Yang, Zhiyong Yang, Pierre Lucas, Yuwei Wang, Zhijie Yang, Anping Yang, Bin Zhang, Haizheng Tao

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The composition dependence of density (d), refractive index (n) and optical bandgap (Eg) 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 <1% error. A convenient method based on diffuse reflectance is proposed to measure Eg of Ge-As-S glasses with good accuracy. It is shown that the value of Eg 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.

Original languageEnglish (US)
Pages (from-to)38-42
Number of pages5
JournalJournal of Non-Crystalline Solids
Volume440
DOIs
StatePublished - May 15 2016

Fingerprint

Optical properties
Physical properties
physical properties
S glass
refractivity
optical properties
Glass
glass
Refractive index
Chemical analysis
coordination number
sulfur
Optical band gaps
reflectance
Sulfur

Keywords

  • Chalcogenide glasses
  • Diffuse reflectance spectrum
  • Optical bandgap
  • Refractive index

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

Cite this

Composition dependence of physical and optical properties in Ge-As-S chalcogenide glasses. / Yang, Yan; Yang, Zhiyong; Lucas, Pierre; Wang, Yuwei; Yang, Zhijie; Yang, Anping; Zhang, Bin; Tao, Haizheng.

In: Journal of Non-Crystalline Solids, Vol. 440, 15.05.2016, p. 38-42.

Research output: Contribution to journalArticle

Yang, Yan ; Yang, Zhiyong ; Lucas, Pierre ; Wang, Yuwei ; Yang, Zhijie ; Yang, Anping ; Zhang, Bin ; Tao, Haizheng. / Composition dependence of physical and optical properties in Ge-As-S chalcogenide glasses. In: Journal of Non-Crystalline Solids. 2016 ; Vol. 440. pp. 38-42.
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AU - Zhang, Bin

AU - Tao, Haizheng

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