| Effects of Li＋ on photoluminescence of Sr3SiOs： Sm3＋ red phosphor |
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| 引用本文： | 张新,徐旭辉,邱建备,余雪.Effects of Li＋ on photoluminescence of Sr3SiOs： Sm3＋ red phosphor[J].中国物理 B,2013(9):172-176. |
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| 作者姓名： | 张新 徐旭辉 邱建备 余雪 |
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| 作者单位： | College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （Grant No. 11204113）, the Specialized Research Fund for the Doctoral Program of Higher Education of China （Grant No. 20115314120001）, the China Postdoctoral Science Foundation （Grant No. 201 IM501424）, and the Natural Science Foundation of Yunnan Province, China （Grant No. 2011FB022）. |
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| 摘 要： | The structure and photoluminescence （PL） properties of Sr3 SiO5： Sm3＋ and Li＋-doped Sr3SiOs： Sm3＋ red-emitting phosphors were investigated. Samples were prepared by the high-temperature solid-state method. PL spectra show that the concentration quenching occurs when the Sm3＋ concentration is beyond 1.3 mol% in Sr3SiOs： Sm3＋ phosphor without doping Li＋ ions. The concentration-quenching mechanism can be explained by the electric dipole-dipole interaction of Sm3＋ ions. The incorporation of Li＋ ions into Sr3SiOs： Sm3＋ phosphors, as a charge compensator, improves the PL properties. The lithium ions also suppress the concentration quenching in Sm3＋ with concentration increased from 1.3 tool% to 1.7 tool%.
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| 关 键 词： | 光致发光光谱 红色荧光粉 钐离子 浓度淬灭 偶极相互作用 浓度猝灭 发光特性 高温固相法 |
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