【摘要】 采用传统水热反应一步合成出一系列与基质同相的Sm³⁺离子掺杂NaY（MoO₄）₂荧光粉。XRD、SEM、粒度分布和发光光谱等测试结果表明，所得产物为具有四方白钨矿结构的微米颗粒，且当更多Sm³⁺取代Y³⁺离子后，会引起晶胞常数增大。此外，当引入EDTA-2Na后，其颗粒尺寸在减小的同时，形貌亦由八面体演变至长方体，这是EDTA-2Na控制颗粒生长以及对{001}晶面的优先作用吸附所致。最后，在814 nm近红外光激发下，可观察到565 nm绿光、600 nm橙光以及647 nm与706 nm处的红光发射，其中绿光发射源自Sm³⁺的⁴G_5/2→⁶H_5/2跃迁，橙光由Sm³⁺的⁴G_5/2→⁶H_7/2跃迁产生，而红光则分别归属于⁴G_5/2→⁶H_9/2和⁴G_5/2→⁶H_11/2跃迁。更多还原

【Abstract】 A series of Sm³⁺ion doped NaY（MoO₄）₂ phosphors were synthesized by traditional hydrothermal method.The structure,morphology and luminescence properties of the synthesized materials were examined by X-ray diffraction（XRD）,scanning electron microscopy （SEM）,size distribution and fluorescence spectrometer,respectively.The results showed that the obtained product was micron particles with tetragonal scheelite structure,and when more Sm³⁺replaced Y³⁺ions,the cell constant increased.In addition,when EDTA-2Na was introduced,the particle size decreased,and the morphology also changed from octahedron to cuboid,which was caused by EDTA-2Na controlling the particle growth and preferential adsorption on the{001}crystal plane.Finally,under 814 nm excitation,NaY（MoO₄）₂:Sm³⁺had the 565 nm green emission peak,600 nm orange emission peak as well as red emission peaks at 647 nm and 706 nm.The green emitting light resulted from the energy level transition of ⁴G_5/2→⁶H_5/2 of Sm³⁺,orange emitting light was from the transition of ⁴G_5/2→⁶H_7/2 of Sm³⁺,and red light were from the transitions of ⁴G_5/2→⁶H_9/2 and ⁴G_5/2→⁶H_11/2,respectively.更多还原