Emission and local structure of rare-earth ions in chalcogenide glasses
SCIE
SCOPUS
- Title
- Emission and local structure of rare-earth ions in chalcogenide glasses
- Authors
- Heo, J
- Date Issued
- 2007-05-15
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Local structures of rare-earth ions in Ge-Ga-S-CsBr glasses were investigated to understand the structural origin on the emission property enhancement. The frequency of the phonon vibration controlling the multiphonon relaxation was changed to 245 cm(-1) due to the formation of Ga-Br bonds with CsBr addition to sulfide glasses. Formation of this new chemical bond was also confirmed from the phonon side band spectra of Eu3+ ions. Analyses of the EXASF spectra proved that Tm3+ ions were surrounded by approximately seven S ions in Ge0.25Ga0.10S0.65 glass but were coordinated by similar to 6 Br ions in the glass with 10 mol% of CsBr. (C) 2007 Elsevier B.V. All rights reserved.
- Keywords
- chalcohalides; optical properties; luminescence; rare-earths in glasses; structure; short-range order; GA-S GLASSES; GE; FLUORESCENCE; CSBR; EU3+; SPECTROSCOPY; MECHANISM; GALLIUM; TM3+
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23387
- DOI
- 10.1016/j.jnoncrysol.2006.09.056
- ISSN
- 0022-3093
- Article Type
- Article
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 353, no. 13-15, page. 1358 - 1363, 2007-05-15
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