Detail publikace

Luminescent Eu3+-doped transparent alumina ceramics with high hardness

DRDLÍKOVÁ, K. KLEMENT, R. HADRABA, H. DRDLÍK, D. GALUSEK, D. MACA, K.

Originální název

Luminescent Eu3+-doped transparent alumina ceramics with high hardness

Anglický název

Luminescent Eu3+-doped transparent alumina ceramics with high hardness

Jazyk

en

Originální abstrakt

The Eu3+-doped transparent aluminas were prepared by wet shaping technique followed by pressureless sintering and hot isostatic pressing. The effect of dopant amount on microstructure, real in-line transmission (RIT), photoluminescence (PL) properties, hardness and fracture behaviour was studied. The RIT decreased with increasing amount of the dopant. The PL emission spectra of Al2O3:Eu3+ ceramics exhibited predominant red light emission with the highest intensity (under 394 nm excitation) for material containing 0.125 at.% of Eu3+ and colour coordinates (0.645, 0.355) comparable with commercial red phosphors. The doping resulted in hardness increase from 26.1 GPa for undoped alumina to 27.6 GPa for Eu-doped sample. The study of fracture surfaces showed predominantly intergranular crack propagation micro-mechanism.

Anglický abstrakt

The Eu3+-doped transparent aluminas were prepared by wet shaping technique followed by pressureless sintering and hot isostatic pressing. The effect of dopant amount on microstructure, real in-line transmission (RIT), photoluminescence (PL) properties, hardness and fracture behaviour was studied. The RIT decreased with increasing amount of the dopant. The PL emission spectra of Al2O3:Eu3+ ceramics exhibited predominant red light emission with the highest intensity (under 394 nm excitation) for material containing 0.125 at.% of Eu3+ and colour coordinates (0.645, 0.355) comparable with commercial red phosphors. The doping resulted in hardness increase from 26.1 GPa for undoped alumina to 27.6 GPa for Eu-doped sample. The study of fracture surfaces showed predominantly intergranular crack propagation micro-mechanism.

Plný text v Digitální knihovně

Dokumenty

BibTex


@article{BUT138837,
  author="Katarina {Drdlíková} and Róbert {Klement} and Hynek {Hadraba} and Daniel {Drdlík} and Dušan {Galusek} and Karel {Maca}",
  title="Luminescent Eu3+-doped transparent alumina ceramics with high hardness",
  annote="The Eu3+-doped transparent aluminas were prepared by wet shaping technique followed by pressureless sintering and hot isostatic pressing. The effect of dopant amount on microstructure, real in-line transmission (RIT), photoluminescence (PL) properties, hardness and fracture behaviour was studied. The RIT decreased with increasing amount of the dopant. The PL emission spectra of Al2O3:Eu3+ ceramics exhibited predominant red light emission with the highest intensity (under 394 nm excitation) for material containing 0.125 at.% of Eu3+ and colour coordinates (0.645, 0.355) comparable with commercial red phosphors. The doping resulted in hardness increase from 26.1 GPa for undoped alumina to 27.6 GPa for Eu-doped sample. The study of fracture surfaces showed predominantly intergranular crack propagation micro-mechanism.",
  address="Elsevier",
  chapter="138837",
  doi="10.1016/j.jeurceramsoc.2017.05.007",
  howpublished="print",
  institution="Elsevier",
  number="14",
  volume="37",
  year="2017",
  month="may",
  pages="4271--4277",
  publisher="Elsevier",
  type="journal article in Web of Science"
}