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Influence of the Sc cation substituent on the structural properties and energy transfer processes in GAGG:Ce crystals

Spassky, Dmitry ; Kozlova, Nina ; Zabelina, Evgeniia ; Kasimova, Valentina ; Krutyak, Nataliya ; Ukhanova, Alisa ; Morozov, Vladimir A. ; Morozov, Anatolii V. ; Buzanov, Oleg and Chernenko, Kirill LU , et al. (2020) In CrystEngComm 22(15). p.2621-2631
Abstract

The influence of the Sc cation substituent on the structural and luminescence properties of GAGG:Ce crystals was studied. Unit cell parameters and space groups were obtained using XRD analysis. The chemical compositions of the crystals were determined using SEM-EDX and TEM-EDX techniques. Structures were refined by the Rietveld method and the distribution of Al/Ga/Sc cations between octahedral and tetrahedral sites was obtained. The influence of Sc on the electronic band structure and the energy of the 4f and 5d Ce3+ levels is shown. The modification of the band structure induced by the Sc electronic states results in the suppression of Gd emission and enhancement of Ce3+ emission at low temperatures. The... (More)

The influence of the Sc cation substituent on the structural and luminescence properties of GAGG:Ce crystals was studied. Unit cell parameters and space groups were obtained using XRD analysis. The chemical compositions of the crystals were determined using SEM-EDX and TEM-EDX techniques. Structures were refined by the Rietveld method and the distribution of Al/Ga/Sc cations between octahedral and tetrahedral sites was obtained. The influence of Sc on the electronic band structure and the energy of the 4f and 5d Ce3+ levels is shown. The modification of the band structure induced by the Sc electronic states results in the suppression of Gd emission and enhancement of Ce3+ emission at low temperatures. The Ce3+ emission decay is accelerated under high-energy excitation of the Sc-containing GAGG compound.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
CrystEngComm
volume
22
issue
15
pages
11 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:85083490529
ISSN
1466-8033
DOI
10.1039/d0ce00122h
language
English
LU publication?
yes
id
dc93a1d5-cc4d-40ea-a0ff-16a85cc1bc79
date added to LUP
2020-04-30 07:45:09
date last changed
2022-04-18 21:56:21
@article{dc93a1d5-cc4d-40ea-a0ff-16a85cc1bc79,
  abstract     = {{<p>The influence of the Sc cation substituent on the structural and luminescence properties of GAGG:Ce crystals was studied. Unit cell parameters and space groups were obtained using XRD analysis. The chemical compositions of the crystals were determined using SEM-EDX and TEM-EDX techniques. Structures were refined by the Rietveld method and the distribution of Al/Ga/Sc cations between octahedral and tetrahedral sites was obtained. The influence of Sc on the electronic band structure and the energy of the 4f and 5d Ce<sup>3+</sup> levels is shown. The modification of the band structure induced by the Sc electronic states results in the suppression of Gd emission and enhancement of Ce<sup>3+</sup> emission at low temperatures. The Ce<sup>3+</sup> emission decay is accelerated under high-energy excitation of the Sc-containing GAGG compound.</p>}},
  author       = {{Spassky, Dmitry and Kozlova, Nina and Zabelina, Evgeniia and Kasimova, Valentina and Krutyak, Nataliya and Ukhanova, Alisa and Morozov, Vladimir A. and Morozov, Anatolii V. and Buzanov, Oleg and Chernenko, Kirill and Omelkov, Sergey and Nagirnyi, Vitali}},
  issn         = {{1466-8033}},
  language     = {{eng}},
  number       = {{15}},
  pages        = {{2621--2631}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{CrystEngComm}},
  title        = {{Influence of the Sc cation substituent on the structural properties and energy transfer processes in GAGG:Ce crystals}},
  url          = {{http://dx.doi.org/10.1039/d0ce00122h}},
  doi          = {{10.1039/d0ce00122h}},
  volume       = {{22}},
  year         = {{2020}},
}