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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Veber, Alexander
Helmholtz-Zentrum Berlin für Materialien und Energie
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Toughening Immiscible Polymer Blends:The Role of Interface-Crystallization-Induced Compatibilization Explored Through Nanoscale Visualizationcitations
- 2023Effect of post-heat-treatment on the structural, spectroscopic and dissolution properties of a highly stable Er3+-doped multi-component phosphate glasscitations
- 2023Spectroscopic properties of Er<sup>3+</sup> doped germanate glasses before and after a heat treatment processcitations
- 2023Spectroscopic properties of Er3+ doped germanate glasses before and after a heat treatment processcitations
- 2023Fabrication and characterization of SiO2 glass containing YbPO4 crystalscitations
- 2021Effect of post-heat-treatment on the structural, spectroscopic and dissolution properties of a highly stable Er3+-doped multi-component phosphate glasscitations
- 2021Synthesis, Characterization, and Optical Properties of Ytterbium(III) Phosphates and Their Incorporation in Different Glass Matricescitations
- 2021Coupling Raman, Brillouin and Nd3+ Photo Luminescence Spectroscopy to Distinguish the Effect of Uniaxial Stress from Cooling Rate on Soda−Lime Silicate Glasscitations
- 2020Impact of ZnO addition on Er3+ near-infrared emission, the formation of ag nanoparticles, and the crystallization of sodium fluorophosphate glasscitations
- 2020Radiation-induced defects and effects in germanate and tellurite glassescitations
- 2020Transparent Yb3+ doped phosphate glass-ceramicscitations
- 2019Nano-Structured Optical Fibers Made of Glass- Ceramics, and Phase Separated and Metallic Particle- Containing Glassescitations
- 2017Ce/Al correlation in aluminosilicate glasses and optical silica fiber preforms
- 2017Cerium redox state in silicate glasses and melts: implications for property changes and structural roles
- 2017Cerium redox state in silicate glasses and melts: implications for properties change and structural roles
- 2017Chemical tunability of europium emission in phosphate glassescitations
- 2017Chemical tunability of europium emission in phosphate glassescitations
Places of action
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article
Spectroscopic properties of Er<sup>3+</sup> doped germanate glasses before and after a heat treatment process
Abstract
<jats:p>In this paper structural, thermal and optical properties of Er<jats:sup>3+</jats:sup> doped germanate glasses with the composition of 63.0GeO<jats:sub>2</jats:sub>-9.8Ga<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>-11.1BaO-4.9X-8.8Na<jats:sub>2</jats:sub>O-2.5Er<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> (in mol%), where X = ZnO, TiO<jats:sub>2</jats:sub>, Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> and Y<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> are reported. The investigated glasses exhibit low phonon energies (<1000 cm<jats:sup>-1</jats:sup>) and high glass transition temperature varying between 588 and 642 °C. The Raman spectra evidence about different polymerization degree of the glasses. The thermal treatment leads to the precipitation of various crystals, the composition of which depends on the glass composition. According to the spectroscopic properties Er<jats:sup>3+</jats:sup> ions are suspected to have similar local environment in the as-prepared glasses. However, Er-doped crystals are expected to precipitate upon devitrification, which leads to significant change of the spectroscopic properties, in particular increase in the intensity of upconversion and MIR emissions is observed. It is demonstrated that the glasses with Y<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>, ZnO and TiO<jats:sub>2</jats:sub> are promising glasses especially for MIR applications.</jats:p>