Production of nanocrystalline Y2O3:Eu powder by microwave plasma-torch and its characterization
| Autor: | Chan Uk Bang, Soon Cheon Cho, Dong Kwon Lee, Han Sup Uhm, Chang Soo Han |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Photoluminescence
Chemistry Scanning electron microscope Metals and Alloys Analytical chemistry chemistry.chemical_element Surfaces and Interfaces Plasma Evaporation (deposition) Nanocrystalline material Ion source Surfaces Coatings and Films Electronic Optical and Magnetic Materials Materials Chemistry Europium Microwave |
| Zdroj: | Thin Solid Films. 517:4052-4055 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2009.01.179 |
| Popis: | Y2O3:Eu red-emitting nanophosphors were synthesized directly by dissolving Y2O3 and Eu2O3 in HNO3 and by using an atmospheric microwave-plasma torch for a direct continuous preparation and for mass production of Y2O3:Eu powders. Atmospheric microwave plasmas produce a high-temperature plasma flame due to ohmic heating by high frequency electric fields, revealing a maximum central temperature of 6500 ± 350 K. Therefore, the synthesized Y2O3:Eu nanophosphors from instantaneous evaporation of dissolved Y2O3 and Eu2O3 in HNO3 have favorable characteristics such as regular size and cubic equilibrium structure. The nanophosphors were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect