Synthesis and characterization of Nd3+-Yb3+ doped hydroxyapatite nanoparticles
The present work focuses on Nd3+-Yb3+ co-doping of bare and Sr-substituted hydroxyapatite nanoparticles and their chemical, structural and optical characterization. An energy transfer between Nd3+ and Yb3+ centers was found, generating an efficient down-shifting process, where Nd3+ absorbs at a low...
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| Autores principales: | , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Elsevier
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/923bc8351536442395942db3ba329f97 |
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| Sumario: | The present work focuses on Nd3+-Yb3+ co-doping of bare and Sr-substituted hydroxyapatite nanoparticles and their chemical, structural and optical characterization. An energy transfer between Nd3+ and Yb3+ centers was found, generating an efficient down-shifting process, where Nd3+ absorbs at a low near-infrared wavelength and Yb3+ emits at its characteristic 2F7/2 → 2F5/2 transition. The energy transfer was found to be more efficient in Sr-substituted than in bare hydroxyapatite nanoparticles. The synthesized Nd3+-Yb3+ doped hydroxyapatite nanoparticles can potentially find applications not only as diagnostic near-infrared down-shifting agent but also as nanosystem for near-infrared photoactivated treatment. |
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