Detail publikačního výsledku

Photoluminescence and optical properties of Eu3+/Eu2+-doped transparent Al2O3 ceramics

KLEMENT, R.; DRDLÍKOVÁ, K.; KACHLÍK, M.; DRDLÍK, D.; GALUSEK, D.; MACA, K.

Originální název

Photoluminescence and optical properties of Eu3+/Eu2+-doped transparent Al2O3 ceramics

Anglický název

Photoluminescence and optical properties of Eu3+/Eu2+-doped transparent Al2O3 ceramics

Druh

Článek WoS

Originální abstrakt

Transparent Eu3+-doped (0.05–0.15 at. %) alumina ceramics with fine-grained microstructure were prepared and studied in terms of optical properties and photoluminescence (PL). The light transmission through ceramics up to dopant concentrations 0.125 at. % is dominated by birefringence scattering at grain boundaries. As confirmed by HRTEM/EDS element mapping, high photoluminescence intensity was achieved as the result of the dopant segregation at grain boundaries. The PL emission spectra of Al2O3:Eu3+ ceramics exhibited red light emissions with the highest intensity (394 nm excitation) for material containing 0.125 at. % of Eu3+. The luminescence decay was single-exponential with a lifetime ∼1.5 ms. The post-sintering reduction of Eu3+→Eu2+ under an H2 atmosphere (at 1300 °C) was difficult. Two simultaneously coexisting Eu2+ emitting PL centers were identified, one emitting blue light with average decay constant of 150 ns, and the other green light (more intense) with average decay constant of 1.3 μs.

Anglický abstrakt

Transparent Eu3+-doped (0.05–0.15 at. %) alumina ceramics with fine-grained microstructure were prepared and studied in terms of optical properties and photoluminescence (PL). The light transmission through ceramics up to dopant concentrations 0.125 at. % is dominated by birefringence scattering at grain boundaries. As confirmed by HRTEM/EDS element mapping, high photoluminescence intensity was achieved as the result of the dopant segregation at grain boundaries. The PL emission spectra of Al2O3:Eu3+ ceramics exhibited red light emissions with the highest intensity (394 nm excitation) for material containing 0.125 at. % of Eu3+. The luminescence decay was single-exponential with a lifetime ∼1.5 ms. The post-sintering reduction of Eu3+→Eu2+ under an H2 atmosphere (at 1300 °C) was difficult. Two simultaneously coexisting Eu2+ emitting PL centers were identified, one emitting blue light with average decay constant of 150 ns, and the other green light (more intense) with average decay constant of 1.3 μs.

Klíčová slova

Alumina; Eu3+/Eu2+;Transparent ceramics; Luminescence; Decay time

Klíčová slova v angličtině

Alumina; Eu3+/Eu2+;Transparent ceramics; Luminescence; Decay time

Autoři

KLEMENT, R.; DRDLÍKOVÁ, K.; KACHLÍK, M.; DRDLÍK, D.; GALUSEK, D.; MACA, K.

Rok RIV

2021

Vydáno

24.03.2021

Nakladatel

Elsevier Ltd

ISSN

0955-2219

Periodikum

Journal of the European Ceramic Society

Svazek

41

Číslo

9

Stát

Spojené království Velké Británie a Severního Irska

Strany od

4896

Strany do

4906

Strany počet

11

URL

https://www.sciencedirect.com/science/article/pii/S0955221921001783

BibTex

@article{BUT171600,
  author="Róbert {Klement} and Katarina {Drdlíková} and Martin {Kachlík} and Daniel {Drdlík} and Dušan {Galusek} and Karel {Maca}",
  title="Photoluminescence and optical properties of Eu3+/Eu2+-doped transparent Al2O3 ceramics",
  journal="Journal of the European Ceramic Society",
  year="2021",
  volume="41",
  number="9",
  pages="4896--4906",
  doi="10.1016/j.jeurceramsoc.2021.03.029",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221921001783"
}