Controlled Synthesis and Application of α-Al2O3 for Lu3Al5O12: Ce3+ Green Spherical Phosphors
| Autor: | Jing Cao, Zhao Li, Yongfeng Wang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Photoluminescence Scanning electron microscope Doping Oxide chemistry.chemical_element Phosphor 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Lutetium 0104 chemical sciences chemistry.chemical_compound Cerium chemistry Chemical engineering General Materials Science Crystallite 0210 nano-technology |
| Zdroj: | Journal of Wuhan University of Technology-Mater. Sci. Ed.. 33:1028-1031 |
| ISSN: | 1993-0437 1000-2413 |
| Popis: | α-Al2O3 powders with different morphologies, namely fibrous, sheet-like, and spherical, were prepared by the hydrothermal-thermolysis method. Subsequently, polycrystalline, transparent cerium doped lutetium aluminum garnet (Lu3Al5O12:Ce3+) green phosphors were synthesized by high temperature solid-state method using commercial lutetium(III) oxide, cerium(III) oxide, and as-prepared Al2O3 powders with different morphologies. The phases, morphologies, and photoluminescent properties of the prepared phosphors were investigated by X-ray diffraction(XRD), scanning electron microscopy(SEM), and photoluminescence spectroscopy(PL). Moreover, the influences of the morphologies of α-Al2O3 on the types of crystal structure, morphologies, and photoluminescent properties of LuAG:Ce3+ green phosphors were investigated. The results indicated that the morphologies and particle sizes of the α-Al2O3 powders could be controlled by the additives and parameters. Notably, the spherical α-Al2O3 powders with good dispersibility were found to be the excellent base materials of LuAG:Ce3+ green phosphors for white light emitting diodes. |
| Databáze: | OpenAIRE |
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