Lower non-radiative transition probability in Er3+-doped bromide-modified sulfide glasses
| Autor: | Yoji Kawamoto, J. Qiu, M. Shojiya, K. Fukumi, Kohei Kadono |
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| Rok vydání: | 2001 |
| Předmět: |
chemistry.chemical_classification
Photoluminescence Absorption spectroscopy Sulfide Band gap Doping Inorganic chemistry Analytical chemistry Condensed Matter Physics Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Bromide Materials Chemistry Ceramics and Composites Thermal stability Luminescence |
| Zdroj: | Journal of Non-Crystalline Solids. 292:88-92 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/s0022-3093(01)00883-3 |
| Popis: | New sulfo-bromide glasses of the (60− x )GaS 3/2 · x GaBr 3 ·10GeS 2 ·30LnS 3/2 composition (Ln=La and Er; x =0, 5, 10, 15 and 20) were prepared. Their thermal and optical properties were measured. The bromide-modified glasses exhibited more prominent thermal stability than sulfide glasses of the 60GaS 3/2 ·10GeS 2 ·30LnS 3/2 composition (GGLS). As bromides were added to the GGLS glass, the color of the glass changes from red–orange for GGLS glass to pale yellow for bromide-modified sulfide glasses, and consequently the band gaps shifted to shorter wavelengths. As a result, the Er 3+ green up-conversion luminescence intensities at around 525 and 550 nm in the bromide-modified glasses became stronger compared with those in pure GGLS glasses. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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