Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10638303 | Materials Chemistry and Physics | 2005 | 7 Pages |
Abstract
Europium-ion doped BaMgAl10O17 phosphors were prepared via both a sol-gel route and the conventional solid-state route. The effects of various preparation conditions on the optical properties of BaMgAl10O17 based phosphors were investigated. The position of charge transfer band and emission characteristics of europium ions in Ba0.9Eu0.1MgAl10O17 are observed to be different between those prepared by the sol-gel route and those derived from the solid-state route. The sites occupied by europium ions in BaMgAl10O17 are found to depend upon the method of synthesis. The ratios of the intensity of 610Â nm emission (5D0â7F2) to that of 590Â nm emission (5D0â7F1) suggest that Eu3+ ions are located in a more asymmetric environment for the sol-gel-derived phosphors as compared to that in phosphors prepared via the solid-state route. VUV-excited emission characteristics indicate that the prepared phosphors generate intense emission at 458Â nm under excitation at 147Â nm. In addition, the luminescence intensity of the sol-gel-derived phosphors is greater than that of the solid-state-route-derived phosphors. The sol-gel method employing polymerizing agents is demonstrated to be suitable for the synthesis of phosphors used in plasma display panels.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Chung-Hsin Lu, Wei-Tse Hsu, Chien-Hao Huang, S.V. Godbole, Bing-Ming Cheng,