Effects of oxides on optical absorption and homogeneity of GeS2-Sb2S3-based glass
We investigated the effects of oxygen impurities on the optical absorption, glass structure, and homogeneity of a sulfide glass that is a potential candidate for use as an infrared-transmitting material. We prepared glasses based on the pseudo-binary GeS 2 -Sb 2 S 3 system by a conventional method u...
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Published in | Journal of Asian Ceramic Societies Vol. 9; no. 4; pp. 1439 - 1447 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Taylor & Francis
02.10.2021
Taylor & Francis Group |
Subjects | |
Online Access | Get full text |
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Summary: | We investigated the effects of oxygen impurities on the optical absorption, glass structure, and homogeneity of a sulfide glass that is a potential candidate for use as an infrared-transmitting material. We prepared glasses based on the pseudo-binary GeS
2
-Sb
2
S
3
system by a conventional method using metals and sulfur as raw materials in an evacuated silica glass ampoule. The oxygen impurity content according to oxygen analysis was 0.034 mass% (340 ppm) for 20GeS
2
·80SbS
3/2
glass. The oxygen impurities were distributed as oxides bonded to Ge and Sb with a distribution constant, although most of the oxygen was bonded to Ge. In addition, oxysulfide glasses were prepared by substituting GeO
2
or Sb
2
O
3
for the corresponding sulfides. In this case, the oxygen of the added oxides bonded mainly to Ge in the glasses. When more than 2 mol% of the oxides was substituted for the corresponding sulfides in the 20GeS
2
·80SbS
3/2
glass, the glass became translucent or opaque. Microscopy observation revealed that droplet phases with diameters of 2 to 4 µm were precipitated. These phases were rich in germanium and oxygen. The inhomogeneity is induced by the addition of oxides to the glasses, particularly, in those with a large fraction of Sb
2
S
3
in the composition. |
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ISSN: | 2187-0764 |
DOI: | 10.1080/21870764.2021.2003962 |