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DRDLÍKOVÁ, K. KLEMENT, R. SVOBODA, J. DRDLÍK, D. GALUSEK, D. MACA, K.
Original Title
Luminescent Dy3+ and Dy3+/Cr3+ doped transparent Al2O3 ceramics: Microstructure and optical properties
Type
journal article in Web of Science
Language
English
Original Abstract
Highly transparent Dy3+ and Dy3+/Cr3+ polycrystalline alumina ceramics were prepared with the real in-line transmittance (RIT) up to 55% (at λ = 632 nm), one of the highest values reported for luminescent rare-earth elements doped alumina. The RIT of doped alumina decreased more sharply with increasing mean grain size than predicted by the models for pure alumina. Co-doping with Dy3+ and Cr3+ resulted in a moderate increase of the RIT, which was independent on grain size. EDX analysis revealed that dysprosium segregated at grain boundaries and chromium was dispersed throughout the alumina matrix. A thermodynamic model for diffusion of multiple species in systems with multiple sorts of traps was proposed. The photoluminescence excitation and emission spectra of Dy3+-doped alumina showed peaks characteristic for Dy3+-doped materials. In co-doped Dy3+/Cr3+ alumina, Dy3+ emitted in the blue and yellow regions and Cr3+ in the red region, creating a suitable combination for obtaining white light.
Keywords
Alumina; Dysprosium; Chromium; Co-doping; Microstructure
Authors
DRDLÍKOVÁ, K.; KLEMENT, R.; SVOBODA, J.; DRDLÍK, D.; GALUSEK, D.; MACA, K.
Released
24. 3. 2022
ISBN
0955-2219
Periodical
Journal of the European Ceramic Society
Year of study
42
Number
10
State
United Kingdom of Great Britain and Northern Ireland
Pages from
4343
Pages to
4352
Pages count
URL
https://www.sciencedirect.com/science/article/pii/S0955221922002266
BibTex
@article{BUT177569, author="Katarina {Drdlíková} and Róbert {Klement} and Jiří {Svoboda} and Daniel {Drdlík} and Dušan {Galusek} and Karel {Maca}", title="Luminescent Dy3+ and Dy3+/Cr3+ doped transparent Al2O3 ceramics: Microstructure and optical properties", journal="Journal of the European Ceramic Society", year="2022", volume="42", number="10", pages="4343--4352", doi="10.1016/j.jeurceramsoc.2022.03.047", issn="0955-2219", url="https://www.sciencedirect.com/science/article/pii/S0955221922002266" }