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Novel inorganic xerogels doped with CaWO4:xDy: synthesis, characterization and luminescence properties

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Název: Novel inorganic xerogels doped with CaWO4:xDy: synthesis, characterization and luminescence properties
Zdroj: Materials Chemistry and Physics. 199:166-172
Informace o vydavateli: 2017.
Rok vydání: 2017
Témata: silver nanoparticles, sol-gel processes, calcium tungstate, luminescence, dysprosium(III) ions
Popis: A series of novel phosphors based on silica xerogel doped with CaWO4:xDy(III) with various concentration of dysprosium ion was synthesized over a temperature of 800°C. The thermal analysis, XRD measurement and spectroscopic investigations of these materials are presented in this study. Steady state luminescence, luminescence excitation spectra as well as emission spectra have been measured. Under the ultraviolet light, the prepared phosphors show characteristic blue and yellow bands which correspond to 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2 transitions of Dy3+ ion, respectively. The concentration quenching effect occurs when the Dy3+ concentration is x = 0.1.We also present the possibility to increase the emission intensity of Dy(III) doped CaWO4 incorporated into silica xerogel as a result of its interaction with surface plasmons created by silver nanoparticles.
Druh dokumentu: Article
Jazyk: English
ISSN: 0254-0584
DOI: 10.1016/j.matchemphys.2017.07.00510.1016/j.matchemphys.2017.07.005
Přístupové číslo: edsair.dris...02463..dbdb531cf6cec2a6019769fb8705b39a
Databáze: OpenAIRE
Popis
Abstrakt:A series of novel phosphors based on silica xerogel doped with CaWO4:xDy(III) with various concentration of dysprosium ion was synthesized over a temperature of 800°C. The thermal analysis, XRD measurement and spectroscopic investigations of these materials are presented in this study. Steady state luminescence, luminescence excitation spectra as well as emission spectra have been measured. Under the ultraviolet light, the prepared phosphors show characteristic blue and yellow bands which correspond to 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2 transitions of Dy3+ ion, respectively. The concentration quenching effect occurs when the Dy3+ concentration is x = 0.1.We also present the possibility to increase the emission intensity of Dy(III) doped CaWO4 incorporated into silica xerogel as a result of its interaction with surface plasmons created by silver nanoparticles.
ISSN:02540584
DOI:10.1016/j.matchemphys.2017.07.00510.1016/j.matchemphys.2017.07.005