Synthesis, crystal structure and photoluminescence of Eu3+ or Tb3+ doped solid solutions (Y1-xREx)4S3(Si2O7)
| Autor: | Alexander S. Kiryakov, Irina Filatova, Alexey S. Berezin, Maria S. Tarasenko, Nikolay G. Naumov, D. A. Piryazev |
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| Rok vydání: | 2018 |
| Předmět: |
Photoluminescence
Materials science Doping Analytical chemistry 02 engineering and technology Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Ion Inorganic Chemistry Materials Chemistry Ceramics and Composites Melting point Physical and Theoretical Chemistry 0210 nano-technology Luminescence Single crystal Solid solution |
| Zdroj: | Journal of Solid State Chemistry. 265:36-41 |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/j.jssc.2018.05.016 |
| Popis: | Y4S3(Si2O7) and its solid solutions (Y1-xREx)4S3Si2O7 (RE = Eu x = 0.010–0.085, RE=Tb x = 0.010–0.500) were quantitatively prepared by reaction of starting compounds in molten CsCl. Single crystal X-Ray analysis revealed the difference in preference Eu3+ occupancy for two independent RE-sites coming from volume difference of these sites. This effect is negligible for the Tb-containing solid solution due to smaller difference in radii Tb3+ and Y3+ ions. Tb3+-containing samples are luminescent with typical emission of Tb3+, while Eu3+-containing samples are not luminescent. The 1%Tb3+-containing sample emits in blue or in green color depending on the excitation wavelength. Measured melting points are 1545 ± 15 °С for all investigated samples (Y1-xREx)4S3Si2O7. |
| Databáze: | OpenAIRE |
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