In Situ Study of the Temperature and Fluence Dependence of Yb<sup>2+</sup> Luminescence in Yttrium Aluminum Garnet (YAG) Single Crystals
In this study, ion-beam-induced luminescence with 2 MeV H<sup>+</sup> was used to excite YAG single crystals at different temperatures. Under several constant temperatures, the luminescence intensity of Yb<sup>2+</sup> monotonically decreases with increasing fluence, eventual...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Atoms |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2218-2004/13/2/13 |
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| Summary: | In this study, ion-beam-induced luminescence with 2 MeV H<sup>+</sup> was used to excite YAG single crystals at different temperatures. Under several constant temperatures, the luminescence intensity of Yb<sup>2+</sup> monotonically decreases with increasing fluence, eventually reaching approximately 35% of the initial intensity at a fluence of 3.5 × 10<sup>14</sup> cm<sup>−2</sup>. The nonmonotonic evolution behavior of Yb<sup>2+</sup> luminescence intensity with temperature can be effectively described by the intermediate-state model under consecutive temperature variations. The presence of an intermediate state may be the primary cause of the negative thermal quenching of Yb<sup>2+</sup> luminescence. Yb<sup>2+</sup> luminescence intensity decreased to 60% of the initial intensity when the temperature was continuously varied in the 100–300 K range, although the peak position remained rather stable. The luminescence of Yb<sup>2+</sup> exhibits good radiation resistance and thermal stability in the experimental temperature range. |
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| ISSN: | 2218-2004 |