Effects of Li＋ on photoluminescence of Sr3SiOs： Sm3＋ red phosphor

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...

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Bibliographic Details
Published in:中国物理B：英文版 2013 (9), p.172-176
Main Author: 张新 徐旭辉 邱建备 余雪
Format: Article
Language:English
Subjects:
偶极相互作用
光致发光光谱
发光特性
浓度淬灭
浓度猝灭
红色荧光粉
钐离子
高温固相法
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Summary: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%.
ISSN:1674-1056
2058-3834