Chemical characteristics of Dy-S bonds in Ge-As-S glass
SCIE
SCOPUS
- Title
- Chemical characteristics of Dy-S bonds in Ge-As-S glass
- Authors
- Choi, YG; Song, JH; Shin, YB; Heo, J
- Date Issued
- 2007-06-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- From Dy L-3-edge extended X-ray absorption fine structure spectroscopic analysis of Dy-doped Ge-As-S glass, we verified that both the coordination number and Dy-S distance are decreased in this representative chalcogenide glass compared to those in the Dy2S3 crystalline counterpart. The strong covalent nature inherent in chemical bonds between the constituent atoms of Ge-As-S glass would be responsible for the enhanced covalency of the Dy-S bonds, which would then be sensitively related to the optical characteristics of the 4f <-> 4f transitions of Dy3+ as well as the low rare-earth solubility exhibited by the Ge-As-S glass. (C) 2007 Elsevier B.V. All rights reserved.
- Keywords
- chalcogenides; luminescence; rare-earths in glasses; X-ray absorption; ABSORPTION FINE-STRUCTURE; EFFECTIVE IONIC-RADII; FLUOROZIRCONATE GLASSES; OXIDE GLASSES; RARE-EARTHS; EXAFS; CHALCOGENIDE; TRANSITION; SPECTROSCOPY; PR
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23386
- DOI
- 10.1016/j.jnoncrysol.2007.02.040
- ISSN
- 0022-3093
- Article Type
- Article
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 353, no. 16-17, page. 1665 - 1669, 2007-06-01
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