Publication detail

Optical properties of Tb3+- and Cr3+-doped MgAl2O4 ceramics prepared by capsule- and carbon-free hot isostatic pressing

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

Original Title

Optical properties of Tb3+- and Cr3+-doped MgAl2O4 ceramics prepared by capsule- and carbon-free hot isostatic pressing

Type

journal article in Web of Science

Language

English

Original Abstract

Transparent spinel with high real in-line transmittance (RIT up to 79%) was prepared from commercial spinel powder by capsule-free hot isostatic pressing (HIP). Optimal pre-sintering conditions were found in order to enhance the RIT values and doping with Cr3+ (0.01–0.04 at%) and Tb3+ (0.05–0.125 at%) secured photoluminescence. The incorporation of the dopants in tested range does not noticeably reduced the RIT. The Cr3+-doped MgAl2O4 shows efficient narrow red emission at about 685 nm (R-line) due to the 2Eg→4A2g transition of Cr3+ ions located in octahedral sites of D3d local symmetry with a strong crystal field. The Tb3+-doped MgAl2O4 ceramics have shown emissions from blue to red spectral range (5D4→7F3–6 transitions), with prominent green emission centered at 545 nm. The maximal emission intensity was achieved at 0.075 at% of Tb3+, Further increase of Tb3+ content led to the concentration quenching caused by Tb3+ ions segregation at the grain boundaries.

Keywords

Chromium; Photoluminescence; Real in-line transmittance; Spinel; Terbium

Authors

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

Released

1. 8. 2024

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Year of study

44

Number

9

State

United Kingdom of Great Britain and Northern Ireland

Pages from

5440

Pages to

5448

Pages count

9

URL

https://www.sciencedirect.com/science/article/pii/S0955221923009391

BibTex

@article{BUT187899,
  author="Katarina {Drdlíková} and Róbert {Klement} and Daniel {Rychnovský} and Karel {Maca} and Daniel {Drdlík}",
  title="Optical properties of Tb3+- and Cr3+-doped MgAl2O4 ceramics prepared by capsule- and carbon-free hot isostatic pressing",
  journal="Journal of the European Ceramic Society",
  year="2024",
  volume="44",
  number="9",
  pages="5440--5448",
  doi="10.1016/j.jeurceramsoc.2023.11.038",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221923009391"
}