Influence of the Sc cation substituent on the structural properties and energy transfer processes in GAGG:Ce crystals
(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.
(Less)
- author
- organization
- publishing date
- 2020
- 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}}, }