NaY(MoO_(4))_(2):Sm^(3+)荧光材料的制备及其发光性能的研究  

Preparation and Luminescent Properties of NaY(MoO_(4))_(2):Sm^(3+)Phosphors

作　　者：赵政恺 史忠祥 王晶[1] 李翔 ZHAO Zheng-kai;SHI Zhong-xiang;WANG Jing;LI Xiang(College of Materials Science and Engineering,Dalian Jiaotong University,Dalian Liaoning 116028,China)

机构地区：[1]大连交通大学材料科学与工程学院,辽宁大连116028

出　　处：《辽宁化工》2023年第11期1576-1580,共5页Liaoning Chemical Industry

基　　金：中国石油天然气股份有限公司石油化工研究院项目(项目编号:2021210207000265)。

摘　　要：采用传统水热反应一步合成出一系列与基质同相的Sm^(3+)离子掺杂NaY(MoO_(4))_(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Sm^(3+)取代Y^(3+)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Sm^(3+)的^(4)G_(5/2)→^(6)H_(5/2)跃迁,橙光由Sm^(3+)的^(4)G_(5/2)→^(6)H_(7/2)跃迁产生,而红光则分别归属于^(4)G_(5/2)→^(6)H_(9/2)和^(4)G_(5/2)→^(6)H_(11/2)跃迁。A series of Sm^(3+)ion doped NaY(MoO_(4))_(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 Sm^(3+)replaced Y^(3+)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(MoO_(4))_(2):Sm^(3+)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^(4)G_(5/2)→^(6)H_(5/2)of Sm^(3+),orange emitting light was from the transition of^(4)G_(5/2)→^(6)H_(7/2)of Sm^(3+),and red light were from the transitions of^(4)G_(5/2)→^(6)H_(9/2)and^(4)G_(5/2)→^(6)H_(11/2),respectively.

关 键 词：NaY(MoO_(4))_(2):Sm^(3+) 水热反应 EDTA-2Na 

分 类 号：O614.337[理学—无机化学]