Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9586182 | Journal of Luminescence | 2005 | 4 Pages |
Abstract
Decay curves of the Y-emission were measured at 60, 100 and 140Â K by varying emission energy in the range of the Y-emission. The observed decay curves were decomposed into three or four exponential decay components. These decay components were named Ï1, Ï2, Ï4 and Ï5. The emission spectrum for each decay component, i.e., life-time resolved emission spectrum, was obtained by analyzing the observed decay curves. At 60Â K, three bands at 1.95, 2.24Â and 2.47Â eV are obtained for the Ï5, Ï4 and Ï1 components, respectively. For the Ï2 component, sharp peaks appear around 2.30-2.50Â eV. At 100Â K, a dominant band of the Ï4 component is seen at 2.25Â eV. In the low-energy side, a weak band of the Ï5 component is located at 1.95Â eV. At 140Â K, only a single band of the Ï4 component is observed at 2.27Â eV. The origin of emission bands in life-time resolved emission spectra is discussed.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
S. Kawabata, H. Nakagawa,