dc.contributor.author | Pankratova, Viktorija | |
dc.contributor.author | Kozlova, Anna P. | |
dc.contributor.author | Buzanov, Oleg A. | |
dc.contributor.author | Chernenko, Kirill | |
dc.contributor.author | Shendrik, Roman | |
dc.contributor.author | Šarakovskis, Anatolijs | |
dc.contributor.author | Pankratov, Vladimir | |
dc.date.accessioned | 2020-12-15T07:46:42Z | |
dc.date.available | 2020-12-15T07:46:42Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 2045-2322 | |
dc.identifier.uri | https://dspace.lu.lv/dspace/handle/7/52985 | |
dc.description | The work of Viktorija Pankratova was supported by the Latvian Science Council grant LZP-2018/2-0358. Vladimir Pankratov gratefully acknowledges the financial support from the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST «MISiS» (Grant No. К3-2018-021). The research leading to this result has also been supported by the project CALIPSO plus under the Grant Agreement 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020. Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART 2. The optical absorption spectrum at low temperature
reported in this paper were measured on the equipment of the Central of Collective Use “Isotope-geochemical studies” of the Institute of Geochemistry, Siberian Branch, Russian Academy of Sciences. Authors are grateful to A.I. Popov for the fruitful discussions. | en_US |
dc.description.abstract | Cerium doped Gd3Ga3Al2O12 (GGAG) single crystals as well as GGAG:Ce single crystals co-doped by divalent (Mg2+, Ca2+) and tetravalent (Zr4+, Ti4+) ions have been studied by means of time-resolved luminescence as well as the excitation luminescence spectroscopy in vacuum ultraviolet (VUV) and soft X-ray (XUV) spectral range. Tunable laser excitation was applied for time-resolved experiments in order to obtain luminescence decay curves under excitations in Ce3+, Gd3+ and excitonic absorption bands. The influence of the co-dopant ions on the Ce3+ luminescence decay kinetics is elucidated. The fastest luminescence decay was observed for the Mg2+ co-doped crystals under any excitation below bandgap energy indicating the perturbation of the 5d states of Ce3+ by Mg2+ ions. Synchrotron radiation was utilized for the luminescence excitation in the energy range from 4.5 to 800 eV. Special attention was paid to the analysis of Ce3+ excitation spectra in VUV and XUV spectral range where multiplication of electronic excitation (MEE) processes occur. Our results demonstrated that GGAG:Ce single crystals co-doped by Mg2+ ions as well as the GGAG:Ce crystal annealed in vacuum reveal the most efficient excitation of Ce3+ emission in VUV-XUV excitation range. The role of intrinsic defects in MEE processes in the co-doped as well as in the annealed GGAG:Ce single crystals is discussed. | en_US |
dc.description.sponsorship | Horizon 2020 Framework Programme CALIPSO Plus under the Grant Agreement 730872; Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement 739508; Science Council of Latvia LZP-2018/2-0358; Horizon 2020 Framework Programme project CAMART², Ministry of Science and Higher Education of the Russian Federation К3-2018-021. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Nature Research | en_US |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/739508/EU/Centre of Advanced Material Research and Technology Transfer/CAMART² | en_US |
dc.relation.ispartofseries | Scientific Reports;10 (1), 20388 | |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Research Subject Categories::NATURAL SCIENCES:Physics | en_US |
dc.title | Time-resolved luminescence and excitation spectroscopy of Co-doped Gd3Ga3Al2O12 scintillating crystals | en_US |
dc.type | info:eu-repo/semantics/article | en_US |
dc.identifier.doi | 10.1038/s41598-020-77451-x | |