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中文摘要：
通过高温固相反应合成了La1/3NbO3∶Sm3＋荧光粉.样品的荧光光谱表明,La1/3NbO3∶Sm3＋荧光粉最强的激发带在406 nm,对应于Sm3＋的6H5/2→4K11/2跃迁,属于近紫外区（365～410 nm）.当激发波长为406nm时,样品的最强发射峰位于596 nm,是由Sm3＋的4G5/2→6H7/2跃迁而产生的.因此,La1/3NbO3∶Sm3＋可以作为基于近紫外激发的白光发光二极管（LED）的红光材料.而且,La位共掺杂Sr2＋,Ba2＋和Bi3＋使样品的荧光强度大大增加,在最佳掺杂浓度时的量子产率分别为5.4%,7.5%和5.3%.
英文摘要：
La1/3NbO3∶ Sm3＋ phosphor was synthesized by solid state reaction at high temperature and its photoluminescence properties were investigated.Its strongest excitation band is at 406 nm,ascribed to 6H5/2→4K11/2 transition of Sm3＋ in the range of near-ultraviolet region（NUV,365—410 nm）.And its strongest emission peak is at 596 nm,attributed to 4G5/2→6H7/2 transition of Sm3＋.As a result,La1/3NbO3∶ Sm3＋ phosphor shows great potential for future application as alternative red-emitting NUV-based white LEDs.The luminescence intensity can be strongly enhanced by codoping cation in the La-site,namely Sr2＋,Ba2＋ and Bi3＋.And the quantum yield is 5.4%,7.5% and 5.3% for Sr2＋,Ba2＋ and Bi3＋ codoped samples respectively with the optimum doping concentration.
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