Optical, structural and luminescence properties of oxyfluoride phosphate glasses and glass-ceramics doped with Yb3+
| Autor: | Laeticia Petit, Rajannya Sen, Nadia Giovanna Boetti, Mikko Hokka |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Analytical chemistry 02 engineering and technology 01 natural sciences law.invention lcsh:Chemistry Crystal symbols.namesake law 0103 physical sciences lcsh:TA401-492 Materials Chemistry Crystallization 010302 applied physics Precipitation (chemistry) Doping 021001 nanoscience & nanotechnology Condensed Matter Physics Electronic Optical and Magnetic Materials lcsh:QD1-999 Excited state Ceramics and Composites symbols lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology Glass transition Luminescence Raman spectroscopy |
| Zdroj: | Journal of Non-Crystalline Solids: X, Vol 1, Iss, Pp-(2019) |
| ISSN: | 2590-1591 |
| Popis: | The impact of Al2O3 and Y2O3 addition on the structure, Yb3+ luminescence and crystallization is investigated for glasses in the P2O5-SrO-Na2O system. Although the addition of Al2O3 and Y2O3 leads to a more connected phosphate network as evidenced using IR and Raman spectroscopies and increases the glass transition temperature, it does not affect strongly the site of the Yb3+. The addition of Al2O3 and Y2O3 slightly decreases the rate of the glass crystallization. Surface crystallization occurs upon heat treatment. Crystallization was confirmed by the presence of sharp peaks in the XRD patterns of the glasses. Independently of the glass composition, different crystalline phases precipitate in the glasses upon heat treatment. The precipitation of the Na1O7P2Yb1 crystal phase leads to an increase of the excited state 2F5/2 lifetime of Yb3+ and also of the bandwidth of the Yb3+ emission band centered at 1 μm. Keywords: Yb3+ doped phosphate glasses, Heat treatment, Nucleation and growth, Raman & Infrared spectroscopies, Yb3+ luminescence properties |
| Databáze: | OpenAIRE |
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