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Title 

Chemical characteristics of Dy-S bonds in Ge-As-S glass

Authors 

Y G ChoiJ H SongYong Beom ShinJ Heo

Issue Date 

2007

Citation 

Journal of Non-Crystalline Solids, vol. 353, no. 16, pp. 1665-1669

Keywords 

chalcogenidesluminescencerare-earths in glassesX-ray absorptionabsorptionchemical propertiesdoping (additives)dysprosiumglass

Abstract 

From Dy L3-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.

ISSN 

0022-3093

Link 

http://dx.doi.org/10.1016/j.jnoncrysol.2007.02.040

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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