Structural and Photoluminescence Study of Er–Yb Codoped Nanocrystalline Zro2–B2o3 Solid Solution
Codoped Er3+ and Yb3+ nanocrystalline ZrO2–B2O3 phosphor obtained by a modified sol–gel method is demonstrated. The addition of up to 2.5 mol% B2O3 to nanocrystalline ZrO2:Yb(2%), Er(1%) keep the tetragonal rare-earth stabilized ZrO2 phase; whereas higher B2O3 content destabilize the tetragonal phas...
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2012 |
| País: | México |
| Recursos: | Centro de Investigaciones en Óptica |
| Repositório: | Repositorio Institucional CIO |
| OAI Identifier: | oai:cio.repositorioinstitucional.mx:1002/567 |
| Acesso em linha: | http://cio.repositorioinstitucional.mx/jspui/handle/1002/273 http://cio.repositorioinstitucional.mx/jspui/handle/1002/567 |
| Access Level: | Acceso aberto |
| Palavra-chave: | info:eu-repo/classification/cti/1 |
| Resumo: | Codoped Er3+ and Yb3+ nanocrystalline ZrO2–B2O3 phosphor obtained by a modified sol–gel method is demonstrated. The addition of up to 2.5 mol% B2O3 to nanocrystalline ZrO2:Yb(2%), Er(1%) keep the tetragonal rare-earth stabilized ZrO2 phase; whereas higher B2O3 content destabilize the tetragonal phase, leading to the tetragonal to monoclinic transition with no tetragonal ZrO2 phase segregation. Visible upconversion of the luminescent active ions, Er3+ and Yb3+, depend strongly on B2O3 content. The PL intensity is strongly quenched for high B2O3 content due to increasing multiphonon relaxation processes related to B O and B O B vibronic modes. |
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