Synthesis and characterization of Y2(SiO4)O:Ce with LiF and NaF additives
| Autor: | Nikoletta Laczai, László Kovács, László Bencs, Ágnes Péter, Emőke Lőrincz |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
chemistry.chemical_element Mineralogy General Chemistry Yttrium Thermal treatment Scintillator Condensed Matter Physics symbols.namesake chemistry Polymorphism (materials science) symbols General Materials Science Crystallite Luminescence Raman spectroscopy Powder diffraction Nuclear chemistry |
| Zdroj: | Solid State Sciences. 45:23-29 |
| ISSN: | 1293-2558 |
| DOI: | 10.1016/j.solidstatesciences.2015.04.005 |
| Popis: | Polycrystalline, cerium-doped yttrium oxyorthosilicate (Y 1.99 Ce 0.01 SiO 5 , YSO:Ce) scintillator materials have been synthesized and characterized. The samples have been prepared using a mixed-powder route with LiF and NaF additives. The final reaction products have been analyzed for phase purity by X-ray powder diffraction (XRD) and Raman spectroscopy. The concentration of the additives and the temperature of the thermal treatment have strongly effected the formation of the desired high-temperature (X2-YSO) phase. The best yield for X2-YSO has been obtained with the application of 18 mol% LiF at 1400 °C. Samples obtained in this way also showed the highest luminescence yield (intensity per irradiating photon), which was attributed to the effect of Li + on the formation of the X2-YSO phase. |
| Databáze: | OpenAIRE |
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