Publication detail

Processing and properties of luminescent Cr3+ doped transparent alumina ceramics

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

Original Title

Processing and properties of luminescent Cr3+ doped transparent alumina ceramics

Type

journal article in Web of Science

Language

English

Original Abstract

Transparent Cr2O3-doped alumina ceramics were prepared by slip casting, followed by pre-sintering in ambient atmosphere and hot isostatic pressing. The effect of dopant concentration on material properties, including microstructure and optical properties was evaluated. Real in-line transmittance in the range of 20–44 % was measured for the ceramics with the mean grain size<520 nm: the transmittance decreased with increasing grain size and Cr content. The excitation spectra consisted of two broad bands with maxima at 404 nm and 558 nm, corresponding to 4A2g→4T1g and 4A2g→4T2g transitions of Cr3+ ions in octahedral sites of α-Al2O3. The intensive deep red narrow emissions under violet/green light excitation, R-lines (2Eg→4A2g transition), were observed at 692.5 nm and 693.8 nm, that are very close to ruby single crystal. The highest emission was achieved at the Cr3+ concentration of 0.4 at.%. The luminescence decay curves exhibited single-exponential behaviour with decay times of ∼3.6 ms.

Keywords

Alumina; Chromium; Dopants/doping; Luminescence; Real in-line transmittance; Transparent ceramics

Authors

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

Released

1. 7. 2020

Publisher

Elsevier

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Year of study

40

Number

7

State

United Kingdom of Great Britain and Northern Ireland

Pages from

2573

Pages to

2580

Pages count

8

URL

https://www.sciencedirect.com/science/article/pii/S0955221919307575

Full text in the Digital Library

http://hdl.handle.net/11012/187726

BibTex

@article{BUT163593,
  author="Katarina {Drdlíková} and Róbert {Klement} and Daniel {Drdlík} and Dušan {Galusek} and Karel {Maca}",
  title="Processing and properties of luminescent Cr3+ doped transparent alumina ceramics",
  journal="Journal of the European Ceramic Society",
  year="2020",
  volume="40",
  number="7",
  pages="2573--2580",
  doi="10.1016/j.jeurceramsoc.2019.11.010",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221919307575"
}