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最新的APL上关于荧光的一篇文章
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有没有搞荧光的同仁阿，大家交流下 Enhanced luminescence of SrSi2O2N2:Eu2+ phosphors by codoping with Ce3+, Mn2+, and Dy3+ ions Ru-Shi Liu,Yu-Huan Liu, and Nitin C. Bagkar Shu-Fen Hu APPLIED PHYSICS LETTERS 91, 061119 (2007) The authors report here the enhanced luminescence properties of SrSi2O2N2 doped with Eu and M M=Ce, Dy, and Mn. The Eu and Eu, Mn-codoped powders were prepared by a solid state reaction at temperatures between 1400 and 1600 °C under H2 25%–N2 75% atmosphere. The Eu, M-codoped Sr1−x−ySi2N2O2 phosphors have the monoclinic structure with lattice parameters a 15.6 Å, b16.2 Å, c9.4 Å, and 91°. The phosphors can be efficiently excited in the UV to visible region, making them attractive as conversion phosphors for a light emitting diode application. A green-yellow emission was observed for Eu,M-codoped Sr1−x−ySi2N2O2. The addition of M in the Eu site in SrSi2O2N2 remarkably enhances the luminescent intensity by the factor of 144%, 148%, and 168% for Ce, Dy, and Mn, respectively. © 2007 American Institute of Physics. |
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