Resumen
Codoped Er3+ and Yb3+ nanocrystalline ZrO 2-B2O3 phosphor obtained by a modified sol-gel method is demonstrated. The addition of up to 2.5 mol% B2O 3 to nanocrystalline ZrO2:Yb(2%), Er(1%) keep the tetragonal rare-earth stabilized ZrO2 phase; whereas higher B 2O3 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, Er 3+ and Yb3+, depend strongly on B2O3 content. The PL intensity is strongly quenched for high B2O 3 content due to increasing multiphonon relaxation processes related to BO and BOB vibronic modes.
Idioma original | Inglés |
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Páginas (desde-hasta) | 1423-1429 |
Número de páginas | 7 |
Publicación | Materials Science and Engineering B: Solid-State Materials for Advanced Technology |
Volumen | 177 |
N.º | 16 |
DOI | |
Estado | Publicada - 20 sep. 2012 |
Publicado de forma externa | Sí |