采用表面活性剂辅助水热法,制备了一维棒状NaGdF4:Tb^3+/Eu^3+多色纳米发光材料,对其结构和性能进行r表征。XRD分析表明:所得样品为六方相的NaGdF4,结晶良好,微星的Eu^3+,Tb^3+对Gd^3+的取代没有娃著的改变NaGdF4的晶相结构。SEM照片显示:Eu^3+单掺NaGdF4和Tb^3+,Eu^3+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700nm,直径约100nm的纳米棒。荧光光谱表明:Tb^3+,Eu^3+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Eu^3+和Tb^3+的掺杂浓度有关。通过调节Tb^3+,Eu^3+的掺杂琏实现了多色发光,发光颜色从绿光区r向红光区移动。
One dimensional Eu^3+/Tb^3+ co-doped NaGdF4 rod-liked multicolor nanomaterials were syn thesized by surfactant-assisted hydrothermal method and the structure and properties were characterized XRD patterns showed that the samples are hexagonal NaGdF4 with better crystalline, and the NaGdF4 crystal phase structure is not obviously changed with the codoped of Eu^3+ and Tb^3+ SEM images indicated that the morphologies of Eu^3+-doped samples and Eu^3+, Tb^3+ double-doped NaGdF4 nanomaterials are all nanorods with the length of 700 nm and the diameter of about 100 nm. The photoluminescenee results showed that NaGdF4: Eu^3+ , Tb^3+ emits strong green and orange red light near 500 -700 nm and the inten- sity is related to the doped concentration of Eu^3+ and Tb^3+ The multicolor emission can be realized from green to red by tuning the doped concentration of Eu^3+ and Tb^3+.