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The Role of Er3+ Content in the Luminescence Properties of Y3Al5O12 Single Crystals: Incorporation into the Lattice and Defect State Creation

Authors :
Maksym Buryi
Amayès Médhi Gaston-Bellegarde
Jan Pejchal
Fedor Levchenko
Zdeněk Remeš
Katarína Ridzoňová
Vladimir Babin
Sergii Chertopalov
Source :
Crystals, Vol 13, Iss 4, p 562 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

Erbium-doped Y3Al5O12 (YAG) single crystals grown using the micro-pulling-down technique were investigated. Three Er concentrations were chosen: 0.1, 0.3 and 1 at%. Er3+ electron paramagnetic resonance (EPR) spectra were measured in the ground and first excited states. The corresponding g tensors and 167Er hyperfine interaction were changing upon Er content indicating moderation of the Er-O bond length and/or Er local surrounding. Photoluminescence (PL) and radioluminescence (RL) spectra were complex, consisting of strongly overlapped typical Er3+ transitions. In addition, there were other broad PL band (3.1 eV) and RL band (3.95 eV) attributed to the F+ center and yttrium substituting for aluminum (YAl), respectively. The X-ray excited decay kinetics exhibited a decrease of the decay time of the YAl from hundreds of nanoseconds to nanoseconds upon Er doping level. This is discussed and explained considering EPR data.

Details

Language :
English
ISSN :
20734352
Volume :
13
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Crystals
Publication Type :
Academic Journal
Accession number :
edsdoj.f214cbf623457fb1ad3d5bc41fa089
Document Type :
article
Full Text :
https://doi.org/10.3390/cryst13040562