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DRDLÍKOVÁ, K. KLEMENT, R. RYCHNOVSKÝ, D. MACA, K. DRDLÍK, D.
Originální název
Optical properties of Tb3+- and Cr3+-doped MgAl2O4 ceramics prepared by capsule- and carbon-free hot isostatic pressing
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
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.
Klíčová slova
Chromium; Photoluminescence; Real in-line transmittance; Spinel; Terbium
Autoři
DRDLÍKOVÁ, K.; KLEMENT, R.; RYCHNOVSKÝ, D.; MACA, K.; DRDLÍK, D.
Vydáno
1. 8. 2024
ISSN
0955-2219
Periodikum
Journal of the European Ceramic Society
Ročník
44
Číslo
9
Stát
Spojené království Velké Británie a Severního Irska
Strany od
5440
Strany do
5448
Strany počet
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" }