Synthesis of Ba2SiO4:Eu2+ by a Hybrid Process and Its Luminescent Properties
| Autor: | Wonsik Ahn, Jung Hye Park, Young-Jin Kim |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Photoluminescence Silicon Colloidal silica Biomedical Engineering Analytical chemistry chemistry.chemical_element Mineralogy Bioengineering Phosphor General Chemistry Condensed Matter Physics Tetraethyl orthosilicate chemistry.chemical_compound chemistry Particle General Materials Science Luminescence Sol-gel |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 15:8155-8160 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2015.11277 |
| Popis: | Ba2SiO4:Eu2+ powders were prepared using a sol–gel-combustion (hybrid) process with tetraethyl orthosilicate (TEOS) and colloidal silica (C-SiO2) as Si sources. The effects of the silicon sources and preparation conditions on phase formation and luminescent properties were investigated. The B2S:Eu2+ powders synthesized with TEOS were composed of the irregular particles, whereas C-SiO2 was more conducive to uniform particle distribution for the Ba2SiO4:Eu2+ powders, leading to the enhancement of the emission intensity. The photoluminescence spectra of the synthesized powders exhibited broad excitation bands spanning 250 to 450 nm, and strong green-emission bands, whose intensities and positions were heavily dependent on the concentration of Eu2+ and Sr2+ substituted for Ba2+ in Ba2SiO4. |
| Databáze: | OpenAIRE |
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