Photo-luminescence properties and thermo-luminescence curve analysis of a new white long-lasting phosphor:Ca2MgSi2O7:Dy3+
来源期刊：Journal of Rare Earths2009年第5期
论文作者：林林 赵仲华 张慰萍 郑志强 尹民
文章页码：749 - 752
摘 要：A white long-lasting phosphor Ca2MgSi2O7:Dy3+ was prepared by the solid-state reaction. A strong band peaked at 260 nm was shown in the excitation spectrum of 578 nm emission, which might be attributed to the oxygen deficiency of the host. After irradiated with 254 nm for 4 min, the white afterglow of the sample could be seen for 3 h. Moreover, the depths and frequency factors of trap centers were calculated from the thermo-luminescence curve of the sample, which indicated that the trap centers corresponding to the 414 K band were more helpful to the long-lasting phosphorescence.
林林1，赵仲华2,3，张慰萍2，郑志强1，尹民2
1. Department of Physics,Fujian Normal University2. Department of Physics,University of Science and Technology of China3. Department of Physics,the City College of the City University of New York
摘 要：A white long-lasting phosphor Ca2MgSi2O7:Dy3+ was prepared by the solid-state reaction. A strong band peaked at 260 nm was shown in the excitation spectrum of 578 nm emission, which might be attributed to the oxygen deficiency of the host. After irradiated with 254 nm for 4 min, the white afterglow of the sample could be seen for 3 h. Moreover, the depths and frequency factors of trap centers were calculated from the thermo-luminescence curve of the sample, which indicated that the trap centers corresponding to the 414 K band were more helpful to the long-lasting phosphorescence.
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