采用表面活性剂辅助水热法,制备了一维棒状NaGdF4∶Tb3 +/Eu3+多色纳米发光材料,对其结构和性能进行了表征.XRD分析表明:所得样品为六方相的NaGdF4,结晶良好,微量的Eu3+,Tb3+对Gd3+的取代没有显著的改变NaGdF4的晶相结构.SEM照片显示:Eu3+单掺NaGdF4和Tb3,Eu3+双掺NaGdF4纳米发光材料的形貌相同,均为由椭圆形纳米球组成的长约700 nm,直径约100nm的纳米棒.荧光光谱表明:Tb3+,Eu3+双掺的NaGdF4在500~700nm之间有很强的绿光和橙红光发射,并且发光强度与Eu3+和Tib3+的掺杂浓度有关.通过调节Tb3+,Eu3的掺杂量实现了多色发光,发光颜色从绿光区向红光区移动.
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