Detail publikace

Luminescent Dy3+ and Dy3+/Cr3+ doped transparent Al2O3 ceramics: Microstructure and optical properties

DRDLÍKOVÁ, K. KLEMENT, R. SVOBODA, J. DRDLÍK, D. GALUSEK, D. MACA, K.

Originální název

Luminescent Dy3+ and Dy3+/Cr3+ doped transparent Al2O3 ceramics: Microstructure and optical properties

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Alumina; Dysprosium; Chromium; Co-doping; Microstructure

Autoři

DRDLÍKOVÁ, K.; KLEMENT, R.; SVOBODA, J.; DRDLÍK, D.; GALUSEK, D.; MACA, K.

Vydáno

24. 3. 2022

ISSN

0955-2219

Periodikum

Journal of the European Ceramic Society

Ročník

42

Číslo

10

Stát

Spojené království Velké Británie a Severního Irska

Strany od

4343

Strany do

4352

Strany počet

10

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"
}