Luminescence properties of nitride red phosphor for LED
来源期刊：Journal of Rare Earths2008年第5期
论文作者：滕晓明 庄卫东 胡运生 黄小卫
文章页码：652 - 655
摘 要：Eu2+-doped ternary nitride phosphor, Sr2Si5N8:Eu2+, was synthesized using the high temperature solid-state method. The X-ray diffraction （XRD） pattern showed that Sr2Si5N8 single phase was obtained. The lattice parameters shrank because the radius of Eu2+ was smaller than that of Sr2+. The emission spectra showed a broad emission band. With an increase in Eu2+ concentration, the emission peak po- sition was redshifted. The excitation spectra showed two excitation bands originating from the host and the 4f7→4f65d1 transition of Eu2+ ions. Compared with the luminescent characteristic of Sr2Si5N8:Eu2+ and CaS:Eu2+ phosphors, at different temperatures, it was noted that the in- tensity of the two phosphors reduced gradually with an increase in temperature. The intensity of Sr2Si5N8:Eu2+ phosphor was stronger than that of CaS:Eu2+, which indicated that the luminescent characteristic of the former was better than that of the latter.
滕晓明，庄卫东，胡运生，黄小卫
摘 要：Eu2+-doped ternary nitride phosphor, Sr2Si5N8:Eu2+, was synthesized using the high temperature solid-state method. The X-ray diffraction （XRD） pattern showed that Sr2Si5N8 single phase was obtained. The lattice parameters shrank because the radius of Eu2+ was smaller than that of Sr2+. The emission spectra showed a broad emission band. With an increase in Eu2+ concentration, the emission peak po- sition was redshifted. The excitation spectra showed two excitation bands originating from the host and the 4f7→4f65d1 transition of Eu2+ ions. Compared with the luminescent characteristic of Sr2Si5N8:Eu2+ and CaS:Eu2+ phosphors, at different temperatures, it was noted that the in- tensity of the two phosphors reduced gradually with an increase in temperature. The intensity of Sr2Si5N8:Eu2+ phosphor was stronger than that of CaS:Eu2+, which indicated that the luminescent characteristic of the former was better than that of the latter.
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