https://scholars.lib.ntu.edu.tw/handle/123456789/407425
標題: | Preparation and photoluminescence properties of novel color-tunable MgY4Si3O13:Ce3+, Tb3+ phosphors for ultraviolet light-emitting diodes | 作者: | Chung H.-Y. Lu C.-H. Hsu C.-H. |
公開日期: | 2010 | 卷: | 93 | 期: | 7 | 起(迄)頁: | 1838-1841 | 來源出版物: | Journal of the American Ceramic Society | 摘要: | Oxide-based phosphors MgY4Si3O13 codoped with Ce3+ and Tb3+ were prepared in this study. Broad Ce3+ excitation spectra with the highest intensity at 330 nm were found for MgY4Si3O13:Ce3+, Tb 3+ phosphors. Emission lines ranging from 450 to 650 nm originated from the 5D4¡÷7FJ (J=6, 5, 4, 3) transitions of Tb3+ ions. The energy transfer from Ce3+ to Tb3+ occurred effectively in MgY4Si3O 13:Ce3+, Tb3+ with a dipole-quadrupole interaction. Codoping Ce3+ with Tb3+ significantly increased the emission intensity of the prepared phosphors. Increasing the Tb3+ concentration led to the chromaticity coordinates of the prepared samples greatly shifting from the blue to the green region, extending the applicability of MgY4Si3O13:Ce 3+, Tb3+ phosphors in solid-state lighting. ? 2010 The American Ceramic Society. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407425 | ISSN: | 00027820 | DOI: | 10.1111/j.1551-2916.2010.03626.x |
顯示於: | 化學工程學系 |
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