Publication detail

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.

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

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"
}