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Journal Article
Influence of the Ga addition on optical properties of Pr in Ge–Sb–Se glasses
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- Authors
- Jung Kyun Kim, Byeong Kyou Jin, Woon Jin Chung, Bong Je Park, Jong Heo, Yong Gyu Choi
- Issue Date
- 2011-11
- Citation
- Journal of Physics and Chemistry of Solids, v.72, no.11, pp.1386-1389
- ISSN
- 0022-3697
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- Absorption and emission spectra for the 3H4?넄 (3F2, 3H6) transition of Pr 3 ions embedded in GeSbSe glasses turned out to change systematically upon the introduction of a small amout of Ga. Clear blueshift of the absorption peak wavelengths together with the decrease of absorption cross-section was evident in these glasses containing Ga. We believe that the Ga addition into the conventional covalent selenide glasses makes chemical bonds between rare earth atoms and Se atoms more ionic due to preferential location of the GaSe 4 tetrahedra at the second coordination shell of a rare earth atom. Taking into consideration the hypersensitive nature of the Pr3: 3H4?넄3F2 transition, the observed blueshift may manifest the enhanced ionicity of the chemical bonds between Pr and Se in the current Ga-containing glasses. © 2011 Elsevier Ltd. All rights reserved.
- KSP Keywords
- Absorption and emission spectra, Absorption cross-section, Chemical bonds, Pr 3, Preferential location, Rare earths(RE), absorption peak, optical properties, rare earth atoms