ZnO – Yb2O3 composite optical ceramics: Synthesis, structure and spectral-luminescent properties
| Autor: | I. D. Venevtsev, Mikhail A. Baranov, K. Kundzins, E. I. Gorokhova, Aleksander A. Zhilin, Olga Dymshits, Pavel Loiko, Liza Basyrova, Alexander Khubetsov, Irina Alekseeva, Faina Muktepavela, S. B. Eron’ko, M. Tsenter, Eugenia Oreschenko |
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| Přispěvatelé: | S.I. Vavilov State Optical Institute, Peter the Great St. Petersburg Polytechnic University (SPbPU), Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), ITMO University [Russia], D.V. Efremov Institute of Electrophysical Apparatus, University of Latvia (LU), Optique, Matériaux et Laser (OML), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN) |
| Rok vydání: | 2022 |
| Předmět: |
Ytterbium
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] Materials science Infrared Analytical chemistry zinc oxide chemistry.chemical_element ytterbium sesquioxide Hot pressing Sesquioxide Grain growth chemistry visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Grain boundary structure Ceramic luminescence Luminescence optical ceramics |
| Zdroj: | Journal of the European Ceramic Society Journal of the European Ceramic Society, 2022, 42 (2), pp.616-630. ⟨10.1016/j.jeurceramsoc.2021.10.031⟩ |
| ISSN: | 0955-2219 |
| Popis: | International audience; Zinc oxide optical ceramics containing 0 – 2 wt% ytterbium are prepared byuniaxial hot pressing of commercial oxides at 1150 and 1180 °C. The ceramics have themain crystalline phase of hexagonal wurtzite-type ZnO. Ytterbium ions do not enter theZnO crystals but form a cubic sesquioxide phase of Yb2O3 located at the ZnO grainboundaries. Yb acts as an inhibitor for the ZnO grain growth. The ceramics exhibittransmittance up to 60% in the visible. Their transmission in the infrared is determinedby the free charge carrier absorption. The Yb3+ ions are found in C2 and C3i sites in Yb2O3crystals. Under X-ray excitation, the ceramics exhibit intense luminescence bands in theblue (near-band-edge emission) and green (defect emission) whose positions, intensitiesand decay times depend on the Yb content. Yb2O3 causes a redistribution of luminescenceintensity in favor of the near-band-edge emission and fastens the emission decay. |
| Databáze: | OpenAIRE |
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