https://scholars.lib.ntu.edu.tw/handle/123456789/407405
標題: | Structure and novel optical characteristics of SrSi2O 2N2:Ce3+/Tb3+ oxynitride phosphors | 作者: | Hsu C.-H. Cheng B.-M. Lu C.-H. |
公開日期: | 2011 | 卷: | 94 | 期: | 10 | 起(迄)頁: | 3256-3260 | 來源出版物: | Journal of the American Ceramic Society | 摘要: | A microwave-assisted hydrothermal route was developed for preparing (Sr1-x-yCexTby)Si2O 2-£_N2+£g phosphors. Both the required calcination temperatures and heating duration were markedly reduced as compared with the solid-state reaction. With a rise in the calcination temperatures, the emission intensity of Ce3+-doped phosphors decreased due to the thermal quenching effects. For Tb3+-doped phosphors, the emission intensities of the splitting peaks were influenced by the thermal interaction between the Tb3+ energy levels. It is found that the Ce3+- and Tb 3+-doped SrSi2O2N2 phosphors demonstrate great absorption in the vacuum ultraviolet region and are therefore suitable for application in plasma display panels. While Ce3+ and Tb3+ were codoped into SrSi2O2N2, the emission spectra exhibited the combination of the Ce3+ and Tb3+ emission peaks. The energy transfer process from Tb3+ to Ce3+ via the electrostatic interaction was also investigated in detail. ? 2011 The American Ceramic Society. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407405 | ISSN: | 00027820 | DOI: | 10.1111/j.1551-2916.2011.04469.x |
顯示於: | 化學工程學系 |
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