Optical spectroscopy study of Eu-doped ions in BaAl2O4 phosphors
| Autor: | Emanuel Felipe dos Santos Mattos, Romel M. Araujo, Bento Francisco dos Santos Júnior, Mário E.G. Valerio, Marcos V. dos S. Rezende, Robert A. Jackson |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Field (physics) Biophysics Phosphor 02 engineering and technology Q1 010402 general chemistry 01 natural sciences Biochemistry Ion Crystal QD Emission spectrum QA Spectroscopy QC QB Doping General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics 0104 chemical sciences Atomic physics 0210 nano-technology Intensity (heat transfer) |
| Zdroj: | Journal of Luminescence. 236:118011 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2021.118011 |
| Popis: | Computational and experimental methodology is employed to study optical properties in Eu-doped BaAl2O4 phosphors. The symmetry and detailed geometry of the Eu-dopant site, predicted by atomistic simulation, are used to calculate the crystal field parameters and the intensity parameters (Ω2 and Ω4) based on a Judd-Ofelt approach to the Eu3+ ion. The phenomenological intensity parameters are obtained from the emission spectra of the Eu-doped BaAl2O4 and compared to the theoretical results. Experimental and calculated values for the 7F1 energy sub-levels of the Eu3+ and maximum Stark splittings (ΔEmax) are also obtained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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