Journal article
Gamma ray irradiation induced optical band gap variations in chalcogenide glasses
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol.234(4), pp.525-532
2005
Abstract
In the present work γ-irradiation induced optical band gap variations (ΔEopt) were investigated on Ge–As–Se and Ge–As–Se–Te chalcogenide glasses. Higher doses of γ-irradiation resulted in decreased Eopt, which was composition dependent. Especially, glasses with stoichiometric compositions showed different ΔEopt from nonstoichiometric glasses under the same irradiation conditions. There seemed existence of a threshold Eopt (TE) under the certain dose of irradiation below which ΔEopt hardly occurred. Results were interpreted from viewpoint of glass structure, Chemical Bond Approach (CBA) and localized states density theory. Raman analysis supported well these discussions.
Details
- Title
- Gamma ray irradiation induced optical band gap variations in chalcogenide glasses
- Authors/Creators
- F. Xia (Author/Creator)S. Baccaro (Author/Creator)D. Zhao (Author/Creator)M. Falconieri (Author/Creator)G. Chen (Author/Creator)
- Publication Details
- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol.234(4), pp.525-532
- Publisher
- North-Holland Publ Co
- Identifiers
- 991005541915207891
- Copyright
- © 2005 Elsevier B.V.
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 5 Physics
- 5.193 Thermoelectric Materials
- 5.193.702 Chalcogenide Glasses
- Web Of Science research areas
- Instruments & Instrumentation
- Nuclear Science & Technology
- Physics, Atomic, Molecular & Chemical
- Physics, Nuclear
- ESI research areas
- Physics