Site selective substitution of Eu3+ and its effects on structural and luminescent properties of monoclinic YP5O14 pentaphosphate
| Autor: | D. Zambon, Aïcha Mbarek, Geneviève Chadeyron |
|---|---|
| Přispěvatelé: | Institut de Chimie de Clermont-Ferrand (ICCF), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Institut national polytechnique Clermont Auvergne (INP Clermont Auvergne), Université Clermont Auvergne (UCA)-Université Clermont Auvergne (UCA) |
| Rok vydání: | 2021 |
| Předmět: |
Diffraction
Materials science Infrared spectroscopy 02 engineering and technology Crystal structure Trivalent europium 010402 general chemistry 01 natural sciences Ion Inorganic Chemistry Pentaphosphate [CHIM]Chemical Sciences Electrical and Electronic Engineering Physical and Theoretical Chemistry Spectroscopy Site-selective spectroscopy Organic Chemistry Doping 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Crystallography 0210 nano-technology Luminescence Excitation Monoclinic crystal system |
| Zdroj: | Optical Materials Optical Materials, 2021, 113, pp.110899. ⟨10.1016/j.optmat.2021.110899⟩ Optical Materials, Elsevier, 2021, 113, pp.110899. ⟨10.1016/j.optmat.2021.110899⟩ |
| ISSN: | 0925-3467 1873-1252 |
| DOI: | 10.1016/j.optmat.2021.110899 |
| Popis: | International audience; Y1-xEuxP5O14 (0 < x ≤ 1) pentaphosphate polycrystallines were synthesized by solid state reaction and the effects of Eu3+ content on the structure and luminescent properties were investigated. X-ray diffraction and Infrared spectroscopy studies revealed a sequence of the composition-driven structural phase transitions C2/c → P21/c; occur at the lower Eu3+ concentration (below 40 mol% of Eu3+ doping). The spectroscopic properties in UV-excitable range of the doped compounds were investigated. Site-selective laser excitation in the 5D2 level of Eu3+ ion was performed and luminescence decay times were measured at 30 K for 5 and 10%Eu3+ -doped YP5O14 samples. The obtained results clearly show that the Eu3+ ions are distributed over two distinct crystallographic sites. Careful analysis of the main 5D2→7FJ (J = 0, 2) transitions revealed a good agreement between the observed and expected components numbers for the local symmetry predicated upon the crystal structure of the monoclinic YP5O14. The spectroscopic results are discussed and correlated with the structural data. |
| Databáze: | OpenAIRE |
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