Thermal quenching of luminescence in (Lu,Gd,Y)3(Ga, Al)5O12:Ce complex garnet ceramics at high and low temperatures
Cerium-doped complex garnets with the general formula (Lu,Y,Gd)3,(Ga,Al)5O12:Ce are promising materials to be used in PET and CT scanners. By modifying garnet composition (bandgap engineering), one can adjust its scintillation properties to fit a specific set of requirements. In certain compositions...
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| Format: | Article |
| Language: | English |
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Herzen State Pedagogical University of Russia
2021-03-01
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| Series: | Physics of Complex Systems |
| Subjects: | |
| Online Access: | https://physcomsys.ru/index.php/physcomsys/article/view/44 |
| _version_ | 1798029252563566592 |
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| author | Пётр Александрович Родный Иван Дмитриевич Веневцев Василий Михайлович Ханин |
| author_facet | Пётр Александрович Родный Иван Дмитриевич Веневцев Василий Михайлович Ханин |
| author_sort | Пётр Александрович Родный |
| collection | DOAJ |
| description | Cerium-doped complex garnets with the general formula (Lu,Y,Gd)3,(Ga,Al)5O12:Ce are promising materials to be used in PET and CT scanners. By modifying garnet composition (bandgap engineering), one can adjust its scintillation properties to fit a specific set of requirements. In certain compositions, Ce3+ luminescence intensity can decrease upon cooling (negative thermal quenching). The reason for that is still a matter of active debate. This article is focused on negative thermal quenching in Ce-doped (Lu,Gd)3(Ga,Al)5O12 garnet ceramics. We have measured thermally stimulated luminescence, temperature dependence of the X-ray excited luminescence intensity, and other scintillation properties of samples which have different Lu and Ga content and were annealed in different conditions. We discuss that negative thermal quenching in our samples can be attributed to the process of charge carrier localization on traps at lower temperatures. |
| first_indexed | 2024-04-11T19:22:22Z |
| format | Article |
| id | doaj.art-8d0f629309404cbd8983e4548a95b82e |
| institution | Directory Open Access Journal |
| issn | 2687-153X |
| language | English |
| last_indexed | 2024-04-11T19:22:22Z |
| publishDate | 2021-03-01 |
| publisher | Herzen State Pedagogical University of Russia |
| record_format | Article |
| series | Physics of Complex Systems |
| spelling | doaj.art-8d0f629309404cbd8983e4548a95b82e2022-12-22T04:07:17ZengHerzen State Pedagogical University of RussiaPhysics of Complex Systems2687-153X2021-03-012110.33910/2687-153X-2021-2-1-3-8Thermal quenching of luminescence in (Lu,Gd,Y)3(Ga, Al)5O12:Ce complex garnet ceramics at high and low temperaturesПётр Александрович Родный0Иван Дмитриевич Веневцев1Василий Михайлович Ханин2Peter the Great Saint Petersburg Polytechnic UniversityPeter the Great Saint Petersburg Polytechnic UniversityDelft University of TechnologyCerium-doped complex garnets with the general formula (Lu,Y,Gd)3,(Ga,Al)5O12:Ce are promising materials to be used in PET and CT scanners. By modifying garnet composition (bandgap engineering), one can adjust its scintillation properties to fit a specific set of requirements. In certain compositions, Ce3+ luminescence intensity can decrease upon cooling (negative thermal quenching). The reason for that is still a matter of active debate. This article is focused on negative thermal quenching in Ce-doped (Lu,Gd)3(Ga,Al)5O12 garnet ceramics. We have measured thermally stimulated luminescence, temperature dependence of the X-ray excited luminescence intensity, and other scintillation properties of samples which have different Lu and Ga content and were annealed in different conditions. We discuss that negative thermal quenching in our samples can be attributed to the process of charge carrier localization on traps at lower temperatures.https://physcomsys.ru/index.php/physcomsys/article/view/44complex garnet ceramicsCe-dopingannealingradioluminescence spectranegative thermal quenchingthermal ionization |
| spellingShingle | Пётр Александрович Родный Иван Дмитриевич Веневцев Василий Михайлович Ханин Thermal quenching of luminescence in (Lu,Gd,Y)3(Ga, Al)5O12:Ce complex garnet ceramics at high and low temperatures Physics of Complex Systems complex garnet ceramics Ce-doping annealing radioluminescence spectra negative thermal quenching thermal ionization |
| title | Thermal quenching of luminescence in (Lu,Gd,Y)3(Ga, Al)5O12:Ce complex garnet ceramics at high and low temperatures |
| title_full | Thermal quenching of luminescence in (Lu,Gd,Y)3(Ga, Al)5O12:Ce complex garnet ceramics at high and low temperatures |
| title_fullStr | Thermal quenching of luminescence in (Lu,Gd,Y)3(Ga, Al)5O12:Ce complex garnet ceramics at high and low temperatures |
| title_full_unstemmed | Thermal quenching of luminescence in (Lu,Gd,Y)3(Ga, Al)5O12:Ce complex garnet ceramics at high and low temperatures |
| title_short | Thermal quenching of luminescence in (Lu,Gd,Y)3(Ga, Al)5O12:Ce complex garnet ceramics at high and low temperatures |
| title_sort | thermal quenching of luminescence in lu gd y 3 ga al 5o12 ce complex garnet ceramics at high and low temperatures |
| topic | complex garnet ceramics Ce-doping annealing radioluminescence spectra negative thermal quenching thermal ionization |
| url | https://physcomsys.ru/index.php/physcomsys/article/view/44 |
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